Malicious PDF — malware analysis report

Static analysis result for SHA-256 554a3401375ec453…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 23:30:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 2d849f0c7f6ad0c7a838cf2c1aaa7ff0 SHA-1: 2edc3405ca1081e4a208563e38d9e3327fee4fa0 SHA-256: 554a3401375ec45373da9e025368fe053aeae5b3f3ea337d9a2a8e42058122f8
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-spin-ml-link-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-robux-for-free-grantz_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-phantom-forces-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/base-wars-health-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-field-of-battle-gem-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-free-coin-master-coins_GM406889139.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
stream_002_off000030ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30AC 22812 bytes
SHA-256: 920b338696c9dfa54c1f3604848b06c63dd8b67ce49c09dd027bde071a84126c
font_01_sfnt_off000063f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F2 18252 bytes
SHA-256: 6e36f73428881042ec5236fd241d8e8d1779ee7fa975823a1dde4452be0ebbd2

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