Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2c447d87a807381…

MALICIOUS

PDF

39.6 KB Created: 2021-04-22 16:46:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: dbbcce768a33dfa39b517c18378da7e3 SHA-1: 9fc3a7adf8c2fcd260dccfe8cb9ddfed25663e31 SHA-256: c2c447d87a8073812ed5ee0b663a4a31f0a2738dc6e55329cbf64b1af89ae3b0
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a lure related to 'free hack for Robuxs'. The heuristic PDF_GAME_HACK_REDIRECT_LURE specifically flags this type of content. The document body, though partially corrupted, also contains references to 'free hack for Robuxs' and directs users to the malicious URL https://netsecure.pro/app/431946152/free-hack-for-robuxs-on-robloxs-game-hack. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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-hack-for-robuxs-on-robloxs-game-hack PDF link annotation
    • http://diatecgroup.com/images/get-free-robux-on-roblox-games.pdfIn PDF document text
    • http://diatecgroup.com/images/free-promotional-codes-for-roblox.pdfIn PDF document text
    • http://diatecgroup.com/images/how-to-hack-accountds-in-roblox.pdfIn PDF document text
    • http://diatecgroup.com/images/free-working-robux-codes.pdfIn PDF document text
    • http://diatecgroup.com/images/roblox-hack-to-get-roblox.pdfIn PDF document text
    • http://diatecgroup.com/images/roblox-hack-2021-working.pdfIn PDF document text
    • http://diatecgroup.com/images/cheat-engine-roblox-jailbreak-download.pdfIn PDF document text
    • http://diatecgroup.com/images/roblox-game-where-you-hack-computers.pdfIn PDF document text
    • http://diatecgroup.com/images/free-legit-robux.pdfIn PDF document text
    • http://diatecgroup.com/images/roblox-hack-robux-no-download-no-pub.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_off000040a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40A7 24780 bytes
SHA-256: 7661bf92477b884b7123dab8d2264c4532e78941f09dce8a9e0290d9acd6dd31
font_01_sfnt_off00007826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7826 18488 bytes
SHA-256: 5befae200b660992fffc526e525625415ee6348927a3fa2376f6edefa847c57b

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