Malicious PDF — malware analysis report

Static analysis result for SHA-256 334ae3d70662ef7c…

MALICIOUS

PDF

47.9 KB Created: 2021-06-11 12:02:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b32edb4643a22859a43cc5c84dd7a36b SHA-1: 67cc07cabb985cfcb7e1fccf44d6e8d87a4be395 SHA-256: 334ae3d70662ef7c2e39a021650e5d58ee018ce38e5a974cba0bbe23c2cd726a
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 0.9871

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 https://netcdn.tw/app/431946152/roblox-account-pin-hack-game-hack PDF link annotation
    • http://library.umuslim.ac.id//repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-how-to-noclip-cheat-engine-feb-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/grab-points-login_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-with-fake-account_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/tiktok-free-followers-apk_GM835599320.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/pokemon-go-free-remote-raid-pass-2021_GM1094591345.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-robux-free-easy_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/robux_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
stream_004_off0000505c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x505C 31008 bytes
SHA-256: 3400b2a419a508be1439a23b32a58247931fa3df9e8073f1af61f39bbe20d0c7
font_01_sfnt_off000097bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97BD 18700 bytes
SHA-256: 9f9919a15967356052b3cb41a116cbc25aec5e71ae4e2a6f7af13fde2084efbe

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