Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d8fe5bce95bff1b…

MALICIOUS

PDF

37.3 KB Created: 2021-05-21 12:32:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 64c7ca88337dbe471a29b99783575826 SHA-1: 5e8cc3ff85f8944824acd40c160318850d6363b2 SHA-256: 7d8fe5bce95bff1ba4544b3da46f70f680d69798f4df59210a76d794271a33f3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a 'game hack' redirector, specifically pointing to a URL related to 'roblox-rape-hack-game-hack'. The document body and embedded artifacts are heavily obfuscated, but the primary lure appears to be a fake generator or hack. The embedded URLs are likely used to deliver a second-stage payload or redirect to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/roblox-rape-hack-game-hack PDF link annotation
    • https://reggieslockandkey.com/images/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-golden-card-hack_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-hack-root_GM406889139.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
font_00_sfnt_off000033aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33AA 27216 bytes
SHA-256: f4bb4fdbf9e9caffcf999b5d2b0127d9c3ea1fb169b1eca795fa2edafdf5c40b
font_01_sfnt_off00007018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7018 18356 bytes
SHA-256: 8a1fe0c7231104fca4fa627868bae52978e90e92fc8d209bfe3611444447d27b

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