Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ceb0552c2e5b74…

MALICIOUS

PDF

40.4 KB Created: 2021-05-23 08:40:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 09779fc41f368a1d3f8924f788234388 SHA-1: d1e89d90a5ad36728176a1f1e222cc4c2d9f5f5d SHA-256: 01ceb0552c2e5b74f77449187e79a5fc89019292d098f717d189e74cf1f5fc4e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7776

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-gift-card-game-hack PDF link annotation
    • http://possumholler.us/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://possumholler.us/images/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://possumholler.us/images/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • http://possumholler.us/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://possumholler.us/images/get-me-robux-for-free_GM431946152.pdfIn 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_off00003327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3327 26448 bytes
SHA-256: 3177dd85556aca1c3a9722d995f01d46d4621a3f8f4064d34a6e8afb3eaff098
font_01_sfnt_off00006def.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DEF 3992 bytes
SHA-256: 98ac760ceb0fcc9ebc3ae48b3987681152937195d8c60a590d6c0121deb77512
font_02_sfnt_off00007b18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B18 18640 bytes
SHA-256: 59f1432744b9d8cf879cb7c8a299bbbbba85d5427cd565107f85277265ec050e

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