Malicious PDF — malware analysis report

Static analysis result for SHA-256 16ad5968dfcb9bf4…

MALICIOUS

PDF

35.9 KB Created: 2021-05-11 06:03:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cab758d8875b63380ed31d830298a744 SHA-1: 8baff857af3928fcb857e89b00d308d1eb99a828 SHA-256: 16ad5968dfcb9bf42773bded876924c5f5131abc345d1197f16e7f1613decc7c
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious domain, masquerading as a "Master Coin Hack" or "Generator". The document body and heuristics indicate a lure to a malicious website, likely for credential harvesting or malware delivery. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier clean score 0.0265

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/master-coin-hack-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000031b3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31B3 25480 bytes
SHA-256: 38dcba41e2db3e5612b0e48e6144bd960ec4010aa21166e178643c41938df3ee
font_01_sfnt_off00006cb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB7 17716 bytes
SHA-256: abdfd9ce9c51c2315b4184c3f66e8c354c7c04da0bed37d59ef3bf7a35c4f7e9

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