Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb95c33bbdfd149…

MALICIOUS

PDF

28.5 KB Created: 2021-06-27 20:43:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2fceb0aff4fe225fc73802045a9a2a14 SHA-1: bd9c2fba4b3b5cf11af9e5f99c94d71c861876c9 SHA-256: 8fb95c33bbdfd1490112cc82267ebb68c8b59ec1663165df8dbbc4962f4da13d
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game cheats, directing users to a URL associated with malicious redirector infrastructure. This suggests an attempt to trick users into visiting a compromised or malicious site, likely for further malware delivery or phishing. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0330

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 http://netcdn.co/app/431946152/roblox-theme-park-tycoon-2-cheat-codes-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
font_00_sfnt_off0000173d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x173D 22460 bytes
SHA-256: aad5925659b91b32ea1811b8f201f049148148cb6a1df6a60616ad26ffaeaf4e
font_01_sfnt_off0000495e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x495E 19816 bytes
SHA-256: 66405ec93b5ceb384cbca5481da709ec1621bcf1a381f2d2d53c32b435dfd81e

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