Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc43267d00cad761…

MALICIOUS

PDF

39.3 KB Created: 2021-06-07 04:59:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e40618fcdce08ab62550ab5e147b182b SHA-1: 706b283cf9ed7759036d21adc06eb6339fad7d67 SHA-256: fc43267d00cad761f5176eaa5d15753f7b1ea28704f1edfb24c9e72d4afd04a7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL associated with 'free generator / game hack' lures. The document body and heuristics indicate a phishing attempt disguised as a giveaway to trick users into visiting a malicious site. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6289

Heuristics 3

  • 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.
  • 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.tw/app/431946152/free-roblox-gif-card-codes-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003a64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A64 25612 bytes
SHA-256: b4758ac16374e71218d97d921307f7b10fead7eaaf66eb109b02848c40ecf007
font_01_sfnt_off00007642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7642 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00007fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE1 18472 bytes
SHA-256: 5f49f5751d60250ebbd9d2752d51c98d6f8166cfc6e9c4f2d99ebd1258fbbff3

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