Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8afbf0e6283643c…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 23:16:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 80cd25e8483e2aa8818372c8356c4e2f SHA-1: 545f60ed793df9c17506a430c0cf301378ebf18e SHA-256: a8afbf0e6283643c309c764304e4f0b4894870fda7bf4179fd569cf469b945e3
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/406889139/coin-master-free-cards-hack-game-hack PDF link annotation
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-downloads-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/ghost-walk-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/best-free-t-shirts-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/mistplay-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-mouse-fre_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-generator-from-jake-paul_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-cheat-engine-unlimited-cins_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-truly-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-gift-card-roblox-giveaway-live-youtube_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-free-officer-hat_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-doge-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-100-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/shirt-roblox-template-free-shipping_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/games-like-coin-master_GM406889139.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_off00002f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F72 22740 bytes
SHA-256: 4f06b855535a35235a8f38b5d3398c5bf42ea4b4defb64dbbd0288d2c12575a7
font_01_sfnt_off00006247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6247 18340 bytes
SHA-256: 46bbcb93cdf3c0d295b315ab7e658e4bf46b20485efcdd5d2b69d88a805ee664

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