Malicious PDF — malware analysis report

Static analysis result for SHA-256 95363a7c18e4b231…

MALICIOUS

PDF

39.6 KB Created: 2021-04-22 15:00:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 902088403efbc77be5e1780e7d9761c8 SHA-1: e615536e11ab040252b9fcaac890b3f4aee0370e SHA-256: 95363a7c18e4b231891f9cb2348916dcb8e38117bec4445383962b46adbad1c3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common social engineering tactic by promising 'Free Robux' and a 'Download Now' button to entice users. The embedded link directs to a suspicious domain, likely serving as a landing page for further malicious activity or malware distribution. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9215

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.
  • 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://netsecure.pro/app/431946152/free-robux-may-2021-no-suscribe-game-hack PDF link annotation
    • http://domaizdereva24.ru/images/free-robux-no-human-verification-2021-real.pdfIn PDF document text
    • http://domaizdereva24.ru/images/roblox-pizza-place-money-cheat.pdfIn PDF document text
    • http://domaizdereva24.ru/images/free-roblox-selena-quintanilla-shirts.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_003_off00003a4f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3A4F 26848 bytes
SHA-256: 050747f662e19a14336a5e2bd33823004d59882b3f0c5dce2c9de6e215f30c87
font_01_sfnt_off000076a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76A8 19140 bytes
SHA-256: 7b895146fcd7df61fc55ca8361447f985e8ee7e147d7de6ab32ece244d1489da

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