Malicious PDF — malware analysis report

Static analysis result for SHA-256 717aea25de6834ba…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 13:44:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 09cb50cdd5ac7a636411d12bdb221862 SHA-1: 78020de5e3ac1fe8edf3d19f916558604bb3cb9b SHA-256: 717aea25de6834bad64b6c1eadda5fc498a3b72679a9a934cfb553a312ccc410
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 0.9980

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 http://netcdn.tw/app/431946152/roblox-inappropriate-game-hack PDF link annotation
    • http://mountain.mn/uploads/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://mountain.mn/uploads/files/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
    • http://mountain.mn/uploads/files/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • http://mountain.mn/uploads/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://mountain.mn/uploads/files/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • http://mountain.mn/uploads/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://mountain.mn/uploads/files/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://mountain.mn/uploads/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://mountain.mn/uploads/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://mountain.mn/uploads/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://mountain.mn/uploads/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://mountain.mn/uploads/files/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://mountain.mn/uploads/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://mountain.mn/uploads/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://mountain.mn/uploads/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://mountain.mn/uploads/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mountain.mn/uploads/files/how-to-hack-jailbreak-roblox-money_GM431946152.pdfIn PDF document text
    • http://mountain.mn/uploads/files/free-bobux_GM431946152.pdfIn PDF document text
    • http://mountain.mn/uploads/files/how-to-get-robux-fast-for-free_GM431946152.pdfIn PDF document text
    • http://mountain.mn/uploads/files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEF 22652 bytes
SHA-256: 77a75e72dfaca486bb523ad8aacd3731c9585ed2b9e863e14437ddae5660c07e
font_01_sfnt_off00006272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6272 18888 bytes
SHA-256: 8a6ab3739a955dfff6374e8c7c02c786e32d6eeba1a58f2ec5e14e84864058eb

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