Malicious PDF — malware analysis report

Static analysis result for SHA-256 dee8c22ee47c8fc2…

MALICIOUS

PDF

41.3 KB Created: 2021-04-29 02:00:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 62c947ae3e57850c73494aa125e80524 SHA-1: 09634229c384c01f12fabbde2d8cbe68cc5c5665 SHA-256: dee8c22ee47c8fc201eb74c43620d28cf505e79e4f0b0ef32b8022480aa66647
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded URLs that lead to a website offering game hacks and cheats, a common lure for malicious content. The ML classifier strongly indicated maliciousness, and the PDF_GAME_HACK_REDIRECT_LURE heuristic confirms the deceptive nature of the links. The document body, though heavily obfuscated, contains references to game hacks and URLs, reinforcing the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/cheats-fro-csgo-in-roblox-game-hack PDF link annotation
    • https://www.bolsoshf.com/ckfinder/userfiles/files/how-to-become-a-hacker-on-roblox-jailbreak.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/free-decals-for-roblox-work-at-a.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/soros-italian-restaurant-free-roblox.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/uirbx-club-free-robux.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/how-to-make-a-free-robux-hack.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/how-to-hack-other-roblox-accounts.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/roblox-scp-foundation-model-free.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/are-free-robux-streams-legit.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/boku-no-roblox-remastered-hack-chose-quirks.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/easiest-way-to-upload-audio-on-roblox-for-free-2021.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_off0000431b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x431B 26128 bytes
SHA-256: 338281526d943308ad870b5b72519f651cfe45373bf56e9c6c70aa5cacdd3341
font_01_sfnt_off00007e37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E37 18732 bytes
SHA-256: 27417e9decaf13163f3214a31e3bc55ae2128e5db6a5722224547ad30301fecf

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