Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a45d788dc327186…

MALICIOUS

PDF

36.0 KB Created: 2021-05-22 06:34:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 738ab7826227acb46431ea9c9e63536d SHA-1: ef9f0d7e7c4bf016bee4c0f1c739e59c7d6e54c0 SHA-256: 2a45d788dc327186c6b7edd564d8fbc15c9583c72498018fa117d800db6430db
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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 https://netcdn.xyz/app/479516143/free-minecraft-alts-game-hack PDF link annotation
    • http://agritrade-ukraine.com/images/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/www-rubux_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/optifine-pe_GM479516143.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/roblox-girl_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://playhack.in/minecraftIn 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
stream_002_off0000340c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x340C 25560 bytes
SHA-256: 23e2c771428d26ceff7b81073ad138704f7d5beda973a1f55afb44f3d8158e94
font_01_sfnt_off00006d90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D90 17644 bytes
SHA-256: 4350bb70586d7d356c834f80239bf16b03274066df9e9143be1036ee17eff588

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