Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc94fce631f6227…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 15:33:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1c7d9befd11497004dd2e19adac3c201 SHA-1: e11530f5034140b2360ffda3282e0a0612538aec SHA-256: abc94fce631f6227281e1420ce22208a6191ed02f0cc8e4a66ae0ebbf43ca768
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/new-free-money-links-coin-master-game-hack PDF link annotation
    • http://lib.uho.ac.id/library/repository/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/where-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/if-you-get-hacked-on-roblox-what-do-you-do_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/noclip-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/one-player-game-free-roblox_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_off00002e4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E4B 22664 bytes
SHA-256: ef6949aa0e56bcdaf32b8e28bf50e78d907e923db090374ae47f33e6d5f77aa2
font_01_sfnt_off00006101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6101 18512 bytes
SHA-256: 984a3d9702b89b6e666262caaf4c06c2a05e614acf738958ff6740a8d55f6238

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