Malicious PDF — malware analysis report

Static analysis result for SHA-256 75e464f2a23b2cc3…

MALICIOUS

PDF

47.3 KB Created: 2021-04-22 22:15:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 04d954aca40ef522a266b173f38a113d SHA-1: 41816db2b8aa20a24467db07eae462bd59450337 SHA-256: 75e464f2a23b2cc34a85faae1cd4cea405481a8152f4b21cd5046548cf31cbc9
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a heuristic firing indicating it links to a 'free generator / game hack' lure, specifically mentioning Robux for Roblox. Multiple URLs extracted from the document body and heuristics point to sites offering game hacks or cheats. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick the user into clicking a link to download a malicious payload or visit a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9747

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/code-2021-robux-free-daily-game-hack PDF link annotation
    • http://yucaboats.com/images/cheat-tables-roblox.pdfIn PDF document text
    • http://yucaboats.com/images/roblox-hack-scripts-exploit.pdfIn PDF document text
    • http://yucaboats.com/images/hackear-cuenta-de-roblox-2021-pastebin.pdfIn PDF document text
    • http://yucaboats.com/images/free-account-that-has-robux.pdfIn PDF document text
    • http://yucaboats.com/images/how-to-get-robux-on-roblox-hack-no-offer.pdfIn PDF document text
    • http://yucaboats.com/images/cant-make-my-items-free-in-roblox.pdfIn PDF document text
    • http://yucaboats.com/images/comment-hacker-sur-roblox.pdfIn PDF document text
    • http://yucaboats.com/images/how-to-hack-on-roblox-for-all-games.pdfIn PDF document text
    • http://yucaboats.com/images/how-to-put-scripts-in-roblox-hack.pdfIn PDF document text
    • http://yucaboats.com/images/how-to-get-robux-for-free-working-2021.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
stream_003_off0000450b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x450B 30568 bytes
SHA-256: 4ef1866f1d29a3b6575ff951d049c74895e3fd257b0e2ac97a2b2c1d16ad6def
font_01_sfnt_off00008a3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3B 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000093eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93EB 19360 bytes
SHA-256: c893792ac5f5b16d6ba0fc5e47e5bb25937b97872e52c39741ed5a7d7cf21aa1

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