Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca8b02d4a3a18242…

MALICIOUS

PDF

37.9 KB Created: 2021-05-19 02:37:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c45bd0f197e50ee49c4fe7758c8376d5 SHA-1: 5260633e6f514f428d629ca7003da91f5fe9f560 SHA-256: ca8b02d4a3a1824206d000d112aaf51e6183851b344a2c1d6b9996fab57c01db
138 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free generator / game hack' which directs users to a malicious URL. This URL is associated with known malicious redirector infrastructure. The document body and embedded artifacts suggest an attempt to trick users into visiting a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/431946152/how-to-get-free-robux-without-paying-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_off000032df.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32DF 26496 bytes
SHA-256: f53753d256e1c6a309ab6b38bf02f61e58d6bf49792cfc36ebe9aba3acf985eb
font_01_sfnt_off00006ee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE8 19616 bytes
SHA-256: cf429e2e91354d73b6f0728fc312d6ff4bad20be80a5ba6db32adcb01c969c4a