Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf18ca85b40e24f…

MALICIOUS

PDF

39.1 KB Created: 2021-05-21 15:00:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5ca751aa926fdc4233a2faaeba6199e5 SHA-1: d026165be24a9ac6c38b9f7507edfc8ff6373ca6 SHA-256: ccf18ca85b40e24facefed440a5fc9b17b920e72cf79ddb48d75da3c8e9ef168
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it links to a 'free generator / game hack' redirector, specifically mentioning 'Free Robux Websites That Actually Work'. The document body and embedded links point to URLs associated with game hacks and generators, suggesting a social engineering lure. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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 https://netcdn.xyz/app/431946152/free-robux-websites-that-actually-work-game-hack PDF link annotation
    • https://reggieslockandkey.com/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-headless-head-roblox_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-without-human-verification-2021_GM431946152.pdfIn 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_002_off000034db.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34DB 27196 bytes
SHA-256: 52310af950d75f3ecdd64a3cfc7ad697d7347dbc43208433497e9454653326d1
font_01_sfnt_off000074c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C3 19252 bytes
SHA-256: f49525d2cb353299e95430044cca9c62699809686ebb763340304ea0e82a2cbb

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