Malicious PDF — malware analysis report

Static analysis result for SHA-256 66b205ae2d2320dc…

MALICIOUS

PDF

40.8 KB Created: 2021-04-22 16:08:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 400c20c8fd64382b4842432258043e23 SHA-1: 9be707d07b9a225bfa80a94c7646853a94e8a918 SHA-256: 66b205ae2d2320dcaf3a95c5e3616be35160d7f8257ad57250d2cd19116cd414
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 0.9941

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://netsecure.pro/app/431946152/roblox-free-clothes-template-game-hack PDF link annotation
    • http://oca.undil.tl/repository/roblox-field-of-battle-gold-hack-2021.pdfIn PDF document text
    • http://oca.undil.tl/repository/noclip-hack-roblox-2021.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-roblox-codes-unused.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-fly-cheat-engine-2021.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-fly-hack-november-2021.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-roblox-selena-quintanilla.pdfIn PDF document text
    • http://oca.undil.tl/repository/hack-roblox-2021-genirator.pdfIn PDF document text
    • http://oca.undil.tl/repository/gamekitcom-free-800-robux-safe.pdfIn PDF document text
    • http://oca.undil.tl/repository/robux-for-free-script.pdfIn PDF document text
    • http://oca.undil.tl/repository/raindrop-roblox-exploit-free.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

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
stream_003_off0000417e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x417E 26252 bytes
SHA-256: 0f640434c1361b1f130d9b2af63678d66bf729423fa6b0ecd16a8e90b13a97c6
font_01_sfnt_off00007c2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2F 18884 bytes
SHA-256: f95531f7e411f3b4843901daef2d98248ee224ff21575a6801226a57a578ff5c

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