Malicious PDF — malware analysis report

Static analysis result for SHA-256 64d185d32b35c0c2…

MALICIOUS

PDF

34.7 KB Created: 2021-06-21 09:39:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2b280824ba449cb425be2f45ca95dd23 SHA-1: 69c402056875de47c9eb81d41cdd60aeb8c3e224 SHA-256: 64d185d32b35c0c2101a1d2e32a04cae9871a928a341a005d9e49e995d3fba1f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, many of which are presented as download opportunities for game cheats and related content. The ML classifier strongly indicated maliciousness, and the presence of a large number of external links suggests a link farm designed to direct users to potentially harmful sites. The document body itself contains references to game cheats and download URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.co/app/431946152/roblox-tps-soccer-cheat-game-hack PDF link annotation
    • http://linens.kiev.ua/images/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://linens.kiev.ua/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/roblox-how-to-hack-with-ceat-engine_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/free-roblox-model_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/roblox-hack-kostenlose-robux-ohne-handynummer_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/cheats-on-roblox-game_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/hack-para-obtener-robux-2021_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/descargar-hack-sunset-city-roblox-2021_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/logos-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/bubble-gum-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/hack-full-slot-script-roblox_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/minecraft-client_GM479516143.pdfIn PDF document text
    • http://linens.kiev.ua/images/how-to-get-bc-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9F 22772 bytes
SHA-256: 4877d409b8005135fcd5e114e01b09367c7a86af2358f5265f69382f013a3d91
font_01_sfnt_off0000629d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629D 18932 bytes
SHA-256: ee1222d6f3aa92973b5ed961439272718da4a6bc87d4733a3b720d7a779a6b59

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