Malicious PDF — malware analysis report

Static analysis result for SHA-256 764facdc851a7b0e…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 10:42:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 51b829e6ac0d9278fdec72e251d29fd3 SHA-1: b7299827e2c60caa9fa24c258b7e7604edad3ba0 SHA-256: 764facdc851a7b0e1dc8c2bc30fe1b25d55af87b482f88e6b3e9bf46907dc1cd
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, with a primary focus on a link disguised as a 'free generator / game hack'. This heuristic, combined with the ML classifier, strongly suggests a malicious intent to lure users to a potentially harmful website. The document body and extracted URLs indicate a theme of free in-game currency or items, a common lure for phishing or malware distribution.

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/479516143/best-free-minecraft-texture-packs-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-sell-t-shirts-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-download-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/dont-take-damage-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-how-to-use-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-how-to-get-vip-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-a-free-skin-noob-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-hack-your-old-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-hack-glitch-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/cheats-codes-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-glitch-site_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-game-pass-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-printable-roblox-coloring-pictures_GM431946152.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_off00002fdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FDC 22892 bytes
SHA-256: 6ae43f4e42a31fb7b37ce201094ed50384fa356b979bd18afe2c23f1c58b01fb
font_01_sfnt_off00006316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6316 18744 bytes
SHA-256: e8b211b9ffe0a0e580f1a8ca21c01c261f2994ec1764d2244b5caa998895579b

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