Malicious PDF — malware analysis report

Static analysis result for SHA-256 d059950540cd7d33…

MALICIOUS

PDF

31.2 KB Created: 2021-05-15 23:03:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d4eaf72aff956cacc451bbc02f6245cd SHA-1: 73584244eee99fa8ab5451e008ad5e6a08c1d2eb SHA-256: d059950540cd7d338cb935325978f01b7889f18a5c7fc7690c08abf542c4d50b
74 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8565

Heuristics 3

  • 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.
  • 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/431946152/free-robux-no-verification-or-survey-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003391.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3391 24668 bytes
SHA-256: ce1fafb92d8d5da8248d083e2729f5bcceb494682aaa461bf731dbe6b320a2a9

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