Malicious PDF — malware analysis report

Static analysis result for SHA-256 c18f6ff4cceeb453…

MALICIOUS

PDF

41.9 KB Created: 2021-04-23 14:21:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14
MD5: b249ff8b6a8ad9ea6b25ede02256b774 SHA-1: 5ef88efe628490792ccfbedf1f66957e535db8e9 SHA-256: c18f6ff4cceeb4533b5e68d88b5e61a1a57325d70591cca389e2be5e7c04ab1c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure for malicious content, specifically targeting users interested in game hacks like 'Free Robux'. The document body and heuristics indicate it directs users to a URL that likely hosts a malicious payload or further phishing attempts. The presence of multiple related PDF links suggests a campaign distributing such lures.

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.top/app/431946152/free-robux-hack-true-game-hack PDF link annotation
    • http://sudamericarural.org/images/fnaf-roblox-fread-bear.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-hack-game-guardian.pdfIn PDF document text
    • http://sudamericarural.org/images/earn-free-robux.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-hack-explorer-2021.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-fight-the-monsters-cheats.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-free-download-jaleco.pdfIn PDF document text
    • http://sudamericarural.org/images/aresenal-hacks-scripts-for-roblox.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-admin-hack-download.pdfIn PDF document text
    • http://sudamericarural.org/images/mobile-for-free-24-roblox.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-jailbreak-free-vip-server-link-new.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_off00004336.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4336 27676 bytes
SHA-256: 9809cb7a8ec8437c590bbb9e1ade6a584317abcf3b106f72cc75fadb33cc672c
font_01_sfnt_off000081f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F3 18412 bytes
SHA-256: 82d29364dc041237da35a0647054e1581cb12ef660e4970c81b60bbdb4cf7413

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