Malicious PDF — malware analysis report

Static analysis result for SHA-256 12918134dee527ad…

MALICIOUS

PDF

33.8 KB Created: 2021-07-06 20:50:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f8e5f391e2427911cb4221d998f65410 SHA-1: fa6e254af8971749a72addbc30ee109f05c31240 SHA-256: 12918134dee527adca01d6f54fa10a7454d1e49de57cc928a89c2872720bacc0
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/free-robux-card-codes-game-hack PDF link annotation
    • http://windhorsetrek.com/userfiles/files/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/assassin-roblox-cheats-2021_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/infant-roblox-free-hack_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/como-hackear-robux-2021_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/spin-link_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/synapse-roblox-free-no-virus_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/cheat-codes-for-tower-defense-roblox-2021_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-robux-for-free-on-laptop-2021_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_off00002d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D5E 22492 bytes
SHA-256: 222a14e34268884ad6f4d864b4bfc9f8d47ca93f30d4cf012a6e1f3cf83a5eaf
font_01_sfnt_off00005f97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F97 18888 bytes
SHA-256: 6c6de0ceaed5fc014d3dcce92ca1cb896bf7995edf6e50a0e815779b2f83a656

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