Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7df8d54a5245866…

MALICIOUS

PDF

117.6 KB Created: 2022-08-10 14:32:22 +00:00 Authoring application: samugemi (via PDF Master 1.0.1) First seen: 2026-04-28
MD5: 892e60f66621769a4b29cffa9d1cf5a0 SHA-1: f33359b7c84c8283eebe974c05756e1cbd190d50 SHA-256: c7df8d54a52458661d0d5854bb2df846b56e592d2cfc32beb53004461d9dd177
304 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0005

Heuristics 9

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://blogbasters.com/timbaent/acclimated/QXV0b0NBRAQXV.carribbean?flamingo=prepartion&equilibrium=ZG93bmxvYWR8N1VaWkRnemJYeDhNVFkyTURBNU1UQTBPSHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA&quadricep= PDF link annotation
    • https://halletabi.com/wp-content/uploads/2022/08/AutoCAD-28.pdfIn PDF document text
    • https://fitnessclub.boutique/autocad-crack-activation-code-with-keygen-mac-win/In PDF document text
    • https://cupcommunity.com/wp-content/uploads/2022/08/rozival.pdfIn PDF document text
    • https://www.pianistaid.com/wp-content/uploads/2022/08/raydeci.pdfIn PDF document text
    • https://lanfucai.com/wp-content/uploads/2022/08/AutoCAD-10.pdfIn PDF document text
    • https://simonerescio.it/wp-content/uploads/2022/08/AutoCAD-34.pdfIn PDF document text
    • https://eqsport.biz/autocad-crack-free-download-7/In PDF document text
    • http://testthiswebsite123.com/?p=17015In PDF document text
    • https://hilivecourses.com/autocad-23-1-crack-activator-x64-2022-new/In PDF document text
    • https://hanffreunde-braunschweig.de/wp-content/uploads/2022/08/delfair.pdfIn PDF document text
    • https://roimartin.com/wp-content/uploads/2022/08/AutoCAD__Crack-1.pdfIn PDF document text
    • https://listittt.com/wp-content/uploads/2022/08/swedbla.pdfIn PDF document text
    • https://www.luckyanimals.it/autocad-crack-free-3264bit-3/In PDF document text
    • https://www.chimfab.com/autocad-crack-win-mac-2022-new/In PDF document text
    • https://coleccionohistorias.com/2022/08/10/autocad-crack-serial-key-6/In PDF document text
    • http://blogbasters.com/timbaent/acclimated/qxv0b0nbraqxv.carribbean?flamingo=prepartion&equilibrium=zg93bmxvywr8n1vawkrnemjyedhnvfkyturbnu1uqtbpshg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda&quadricep=In 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_off00003044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3044 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off0000b830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB830 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261