Malicious PDF — malware analysis report

Static analysis result for SHA-256 fabb1afd686c49d5…

MALICIOUS

PDF

41.6 KB Created: 2021-05-13 20:31:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dfd58fa40911be377bc280272e4923d0 SHA-1: 16df1ba77c2a43a69f39a6e7679146b00be3e02c SHA-256: fabb1afd686c49d5247eeadfa2ee43e6b4fc8df926e3152d5ca827b63794e447
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 0.9971

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.xyz/app/406889139/free-spin-gratis-coin-master-game-hack PDF link annotation
    • http://lib.akper17.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/mcpe_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/wurst-mc_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/robux-free-gift-card_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_003_off00004819.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4819 25136 bytes
SHA-256: 7573287f3bf992962716674e125720aca4c30413b30fa0f4d68b2cc53be3e5a7
font_01_sfnt_off00008142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8142 17884 bytes
SHA-256: 23dcadeb48e0d526df43250cfc669ee55e9a856b7439bddbcf6542ec0d6b5e03

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