Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e6b3da3db423927…

MALICIOUS

PDF

34.8 KB Created: 2021-05-11 00:48:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4d9063f79ea99691d46675aa377a6c45 SHA-1: fda45d068f0fc685a6de075a194b368a3a9c522f SHA-256: 1e6b3da3db4239273233f650a9676eb83f54896b2bb0979099b0a0d00020067a
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 0.8463

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/406889139/free-spins-coin-master-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000034f3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34F3 24440 bytes
SHA-256: 43a4758e029fcd09972c382bacfd9a2446ff5c570541714161005e317c82d718
font_01_sfnt_off00006c4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4A 17884 bytes
SHA-256: 18816d8d761583b578c9833b8849e2eeaed27ef2f16a893d2032c58e3f8148b6

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