Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4fb3dbec2ffed7…

MALICIOUS

PDF

124.2 KB Created: 2022-07-04 12:37:57 +00:00 Authoring application: paygon (via PDF Master 1.0.1) First seen: 2026-04-03
MD5: baf7063149d49b0f734395fe305d4ad5 SHA-1: fe0dd461dc2624f99409ee44dcecf5989121755f SHA-256: de4fb3dbec2ffed72d1d13fdb5afee5a4a8acf1c7ae5aa749f22152e58bbeba6
264 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document functions as a link farm, directing users to cracked software download sites. The document body and heuristics indicate a lure for cracked software, with multiple URLs pointing to download doorways and redirectors. The primary goal appears to be driving traffic to these malicious download sites, likely to distribute malware.

Machine Learning

  • Nyx PDF Classifier clean score 0.0070

Heuristics 8

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Cracked-software lure uses shortlink/download gateway critical PDF_CRACKED_SOFTWARE_SHORTLINK_LURE
    PDF visible text advertises a crack, serial number, archive, or pirated-software download and pairs it with a shortlink or encoded download gateway. This is a high-confidence social-engineering carrier for unwanted software or droppers; the PDF itself is not a parser exploit.
  • Cracked-software lure uses download-gateway redirectors high PDF_CRACKED_SOFTWARE_REDIRECTOR_LINK_FARM
    PDF contains multiple cracked-software/keygen/serial-key lure links together with long encoded download-gateway URLs or known crack-download redirector hosts. This is stronger than generic piracy vocabulary: the document is an SEO lure that funnels users through redirect/download infrastructure commonly used for adware, unwanted software, or droppers.
  • PDF links to a cracked-software download doorway (base64-obfuscated) high PDF_CRACKED_SOFTWARE_DOWNLOAD_DOORWAY
    PDF's embedded link hides a pirated-software title as a base64 blob inside the URL path/query (and/or carries the ``download|`` doorway-template marker), rather than in visible text. This is a TCPDF-generated SEO doorway that ranks for software-piracy searches and funnels users to fake 'crack/keygen' download pages distributing adware, potentially-unwanted programs, or droppers. The base64 encoding is deliberate obfuscation to evade plaintext lure rules; the PDF itself carries no parser exploit — the risk is the linked crack-download destination.
  • PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
    PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://evacdir.com/RGVsZXRlIExpbmVzRGV/bandwagons/directorycritic/abreu.succulents=equitrend/ZG93bmxvYWR8b1UzYVdRME0zeDhNVFkxTmpnNU1qTTFNbng4TWpVNE4zeDhLRTBwSUVobGNtOXJkU0JiUm1GemRDQkhSVTVk/tvhistory PDF link annotation
    • https://true-syrup-31249.herokuapp.com/ottfyl.pdfIn PDF document text
    • https://munchyn.com/wp-content/uploads/2022/07/oswbak.pdfIn PDF document text
    • http://slimancity.com/upload/files/2022/07/6jhuIuvGgq3oIDjGQQsJ_04_c893e63e4cdec6ea53cd5d523ba2f58a_file.pdfIn PDF document text
    • http://cursodeeletricista.com/wp-content/uploads/2022/07/File_Commander__Crack___Keygen_April2022.pdfIn PDF document text
    • https://www.eagaraz.gov/sites/g/files/vyhlif511/f/uploads/open_burning_application.pdfIn PDF document text
    • https://otelgazetesi.com/advert/web-accessibility-assessment-tool-incl-product-key-free-download-for-pc-latest/In PDF document text
    • https://dailyjaguar.com/wp-content/uploads/2022/07/happjud.pdfIn PDF document text
    • https://www.americanchillpodcast.com/upload/files/2022/07/pjiJc2TatXSvOK3uOQ5U_04_bc5f0c3589475595b037b39be56f60bb_file.pdfIn PDF document text
    • http://ajkersebok.com/?p=43447In PDF document text
    • https://keralaproperties.net/wp-content/uploads/2022/07/MCE_Tuner_Extender__With_License_Code.pdfIn PDF document text
    • https://suisse-trot.ch/advert/dropin-xi-1-04-crack-download-3264bit/In PDF document text
    • https://unoticket.com/wp-content/uploads/2022/07/jaeadd.pdfIn PDF document text
    • http://indiatownship.com/?p=17715In PDF document text
    • https://myvideotoolbox.com/wp-content/uploads/2022/07/PDF_Combiner_Portable.pdfIn PDF document text
    • https://evening-ravine-75124.herokuapp.com/fellmyth.pdfIn PDF document text
    • https://damp-tundra-57323.herokuapp.com/yevelvy.pdfIn PDF document text
    • https://autko.nl/2022/07/fizzer-removal-tool-crack-with-license-code-pc-windows-latest/In PDF document text
    • https://khaosod.us/classified/advert/bambieditor-crack-incl-product-key/In PDF document text
    • https://nisharma.com/firstobject-xml-editor-8-3-1-with-full-keygen/In PDF document text
    • https://ameppa.org/2022/07/04/excel-search-in-multiple-excel-files-software-crack-free-download-updated-2022/In PDF document text
    • http://slimancity.com/upload/files/2022/07/6jhuIuvGgq3oIDjGQQsJ_04In PDF document text
    • http://cursodeeletricista.com/wp-content/uploads/2022/07/File_CommIn PDF document text
    • https://www.eagaraz.gov/sites/g/files/vyhlif511/f/uploads/open_burninIn PDF document text
    • https://otelgazetesi.com/advert/web-accessibility-assessment-tool-In PDF document text
    • https://www.americanchillpodcast.com/upload/files/2022/07/pjiJc2TatIn PDF document text
    • https://keralaproperties.net/wp-content/uploads/2022/07/MCE_Tuner_In PDF document text
    • https://myvideotoolbox.com/wp-In PDF document text
    • https://autko.nl/2022/07/fizzer-removal-tool-crack-with-license-code-In PDF document text
    • https://khaosod.us/classified/advert/bambieditor-crack-incl-product-In PDF document text
    • https://ameppa.org/2022/07/04/excel-search-in-multiple-excel-files-In PDF document text
    • http://evacdir.com/rgvszxrliexpbmvzrgv/bandwagons/directorycritic/abreu.succulents=equitrend/zg93bmxvywr8b1uzyvdrme0zedhnvfkxtmpnnu1qttfnbng4twpvne4zedhlrtbwsuvobgntoxjku0jium1gemrdqkhsvtvk/tvhistoryIn PDF document text
    • http://cursodeeletricista.com/wp-content/uploads/2022/07/file_commander__crack___keygen_april2022.pdfIn PDF document text
    • http://www.tcpdf.orgIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3783 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off0000bf6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF6F 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261