PDF static analysis report

Static analysis result for SHA-256 42af6205c0295b72…

SUSPICIOUS

PDF

29.6 KB Created: 2021-07-20 14:52:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a14ad904f59961853172073941f8dd72 SHA-1: 95c6388e8b84456422d0299f823d15b2bf0efc59 SHA-256: 42af6205c0295b72cc29551391303e3e467862e3492a8fd833268cac8ab96845
52 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a heuristic firing for linking to a game hack generator, which redirects to the URL http://netcdn.tw/app/406889139/coin-master-free-cards-game-hack. This suggests a social engineering lure to trick users into visiting a potentially malicious site. Although no scripts were explicitly extracted, the PDF structure and the nature of the lure indicate a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier clean score 0.0573

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/coin-master-free-cards-game-hack PDF link annotation
    • 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
stream_002_off00002065.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2065 22696 bytes
SHA-256: 2f9f61dfb873aca55d5d9a03040def22e38120e49c8ad8231553367063033d78
font_01_sfnt_off00005348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5348 17884 bytes
SHA-256: dce98ab1a9f6331dfaabbdd57dacdba92c66b57249d10e9c2a1df39138c2a47b

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