Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f314610c183d216…

MALICIOUS

PDF

117.7 KB Created: 2022-07-24 08:52:20 +00:00 Authoring application: fyldim (via PDF Master 1.0.1) First seen: 2026-05-03
MD5: bcc06221b11cf558ddce3214da453c77 SHA-1: c2e4754e066203ca06cfb9d8f3a99a86e025d0b6 SHA-256: 5f314610c183d2165e7ccf336a107da2ecd0d03d8bba01eae93906bad2a110ac
264 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0005

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://seachtop.com/ZG93bmxvYWR8WnI4YkRSblkzeDhNVFkxT0RJeE9ETTBOSHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA.acne/porterhouse/cucamonga/denaturation.pentathlon/snagged/QXV0b0NBRAQXV PDF link annotation
    • https://www.danke-eltern.de/wp-content/uploads/2022/07/AutoCAD_Crack__License_Code__Keygen_Download.pdfIn PDF document text
    • https://vogblog.wales/wp-content/uploads/2022/07/AutoCAD-90.pdfIn PDF document text
    • https://www.shopizzo.com/autocad-22-0-crack-download/In PDF document text
    • https://www.peyvandmelal.com/wp-content/uploads/2022/07/AutoCAD-60.pdfIn PDF document text
    • https://chouichiryuu.com/wp-content/uploads/2022/07/AutoCAD-49.pdfIn PDF document text
    • http://www.sport1ne.com/?p=25836In PDF document text
    • http://tmcustomwebdesign.com/?p=6031In PDF document text
    • https://www.dancesocksbcn.com/advert/autocad-20-1-crack-free-2/In PDF document text
    • https://streamers.worldmoneybusiness.com/advert/autocad-crack-download-2/In PDF document text
    • http://farmaniehagent.com/wp-content/uploads/2022/07/yesevur.pdfIn PDF document text
    • https://xn--80aagyardii6h.xn--p1ai/autocad-24-2-crack-download-128149/In PDF document text
    • https://estatezone.net/autocad-crack-with-license-code-free-win-mac-april-2022-2/In PDF document text
    • http://phukienuno.com/?p=7275In PDF document text
    • https://logocraticacademy.org/autocad-24-2-for-pc-2022-latest/In PDF document text
    • http://mysquare.in/?p=72591In PDF document text
    • http://www.antiquavox.it/autocad-2021-24-0-crack-torrent-free-mac-win-latest-2022/In PDF document text
    • https://society92101.com/wp-content/uploads/2022/07/AutoCAD-19.pdfIn PDF document text
    • https://egypt-aquarium.com/advert/autocad-with-key-updated-2022/In PDF document text
    • http://logottica.com/?p=20237In PDF document text
    • https://fgsdharma.org/autocad-2018-22-0-crack-free-x64/In PDF document text
    • https://www.danke-eltern.de/wp-In PDF document text
    • http://seachtop.com/zg93bmxvywr8wni4ykrsblkzedhnvfkxt0rjee9ettboshg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda.acne/porterhouse/cucamonga/denaturation.pentathlon/snagged/qxv0b0nbraqxvIn 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
🗂 Part of campaign: secureserver.net 1471 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002a83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A83 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off0000b26f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB26F 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261