Malicious PDF — malware analysis report

Static analysis result for SHA-256 26ca7e7e7f83ded5…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 07:12:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 8984fa04fa0a247263efabdb3e0cc78d SHA-1: 839348bf6f358cdf3894098f5d4d8147d5e027ba SHA-256: 26ca7e7e7f83ded537ab08b558415cda38142099f2d55eb6df658100c64d1be3
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/clean-master-coins-hack-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/roblox-military-simulator-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/robux-games_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-mod-cheats_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-every-5-seconds-directo_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-dragon-ball-rage-cheat_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/delta-lite-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/comment-avoir-des-robux-gratuitement-sans-etre-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/robux-glitch-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/freerobux-hack-us_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-do-yu-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-roblox-script-executor_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_002_off00002ffe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FFE 22836 bytes
SHA-256: fa5d6a014b76b593c054bce2db719f3bd35fb124101f79c7dc91840d7ed8ad38
font_01_sfnt_off00006332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6332 18080 bytes
SHA-256: 9c2bf1894890945564fd7824672aa39d3658e30de4050c3be4bdf1a4a3dd007e

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