Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e94b1c9fcf5110a…

MALICIOUS

PDF

36.2 KB Created: 2021-07-04 18:56:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3038642186118e2bd614b169f6e96160 SHA-1: 5a5c968b6910ec00e97be492689d3da955634bb8 SHA-256: 7e94b1c9fcf5110ab4a4313d1cf3ef81ae14f3a2e1bd635222cc06c91e667fd4
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-mod-free-download-game-hack PDF link annotation
    • http://librarystkippgribl.com//repository/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/roblox-download_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/link-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/rewards-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/pokemon-go-free-gifts_GM1094591345.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-game-pack-with-google-play-coin-master_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_off00003561.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3561 23304 bytes
SHA-256: 0aacb2e7d2c1dd1757d9d4864ee0ed1be5b6dcac15d74dcac91546a66130fd9c
font_01_sfnt_off000069e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E0 18576 bytes
SHA-256: 40b18832647033b6d4dfb2224d0c4c41edfc94dbf4025f5fde83337b32b675d8

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