Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5ed85bf2196f359…

MALICIOUS

PDF

33.2 KB Created: 2021-07-20 07:34:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2afe5051676a81f81f885d55458b1849 SHA-1: 9c8d3cd79fecf9d8af3013c7c5439af8bd17f17c SHA-256: f5ed85bf2196f3599fd1415d104cc95694d5c33f874004af4c6cea1783adb332
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free generator / game hack' which redirects to a suspicious URL. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URLs suggest a phishing or scam attempt related to in-game currencies and accounts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/431946152/how-to-buy-robux-for-free-game-hack PDF link annotation
    • https://aits.co.id/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B51 23000 bytes
SHA-256: 25150225d06daabb24f264ba5230ad447b33673abc663eb2d0c54b1b06786417
font_01_sfnt_off00005eee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEE 18544 bytes
SHA-256: 91d288c248a30ed6e74be24ccff17ba7f2cc9913495eb801e969d2fad8023711

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