Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9a8521319c15af6…

MALICIOUS

PDF

40.5 KB Created: 2021-04-22 21:14:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 1320cbf4988b55061c524c81a7082c00 SHA-1: d991d095f960dd60f1d876fdf2164eead2b565b9 SHA-256: d9a8521319c15af686ebba7a5dcfe1433b515f02ee74c8782ccc9990b3673f10
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a heuristic firing indicating it's a 'free generator / game hack' redirector lure, specifically targeting Roblox users. The document body and extracted URLs strongly suggest a scam aimed at tricking users into visiting malicious websites, likely for phishing or malware distribution. No scripts were extracted, but the presence of numerous malicious URLs and the lure itself points to a high-confidence malicious document.

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/roblox-free-pet-scam-game-hack PDF link annotation
    • http://yucaboats.com/images/get-free-robux-codes-now.pdfIn PDF document text
    • http://yucaboats.com/images/comment-hacker-sur-roblox.pdfIn PDF document text
    • http://yucaboats.com/images/actual-working-free-robux.pdfIn PDF document text
    • http://yucaboats.com/images/duck-roblox-free.pdfIn PDF document text
    • http://yucaboats.com/images/roblox-hack-scripts-exploit.pdfIn PDF document text
    • http://yucaboats.com/images/free-catalog-maker-roblox.pdfIn PDF document text
    • http://yucaboats.com/images/roblox-hack-script-mad-city.pdfIn PDF document text
    • http://yucaboats.com/images/mad-city-cheat-codes-season-2-roblox-website.pdfIn PDF document text
    • http://yucaboats.com/images/roblox-btools-hack-2021.pdfIn PDF document text
    • http://yucaboats.com/images/hackear-cuenta-de-roblox-2021-pastebin.pdfIn PDF document text
    • https://freerobux.cyouIn 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_off00003fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FEA 25916 bytes
SHA-256: 7bbf679509fd674b5d4e469ed3a823686b29bcbfd55b7ec8ae53dd88c1d53ad0
font_01_sfnt_off00007b88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B88 18692 bytes
SHA-256: 6f0b801089260e219e3e14d66eb243ede5c45a3c5dc9e88b3e206de455f72110

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