Malicious PDF — malware analysis report

Static analysis result for SHA-256 b95dfc67a5f44d3f…

MALICIOUS

PDF

41.1 KB Created: 2021-04-23 15:02:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 8318c157e267e726b2fca0598440c10e SHA-1: 9cc19a17436658c55b3ff0ab277272831778bcb4 SHA-256: b95dfc67a5f44d3f771dd3c2d18a0535d8433d3336ba822bfa130eb46fd13d71
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to Roblox game hacks, directing users to click a link for a 'free generator / game hack'. This link, https://netsecure.top/app/431946152/roblox-skidma-hack-game-hack, likely leads to a malicious site. The document body also contains multiple other URLs pointing to similar game hack content, suggesting a phishing or scam campaign. No scripts were extracted, but the PDF structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful content.

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/roblox-skidma-hack-game-hack PDF link annotation
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-hacks-on-lumber-tycoon-robux.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-roblox-cards-no-human-verification.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/ho-to-get-min-on-roblox-for-free.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/button-complex-free-robux-robuxian.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-roblox-character-codes.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-do-you-get-free-robux-on-your-phone.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/cheat-engine-65-download-roblox.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-how-to-hack-piano.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/is-it-possible-to-hack-roblox.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-robux-2021-codes-withou.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_off00004106.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4106 26656 bytes
SHA-256: 802a13077d0fccdd8a9c46e9c1cba0362ee6dc9ba0bd93ce98d25b102d66c707
font_01_sfnt_off00007dbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBB 18736 bytes
SHA-256: 8144b7c3f94e25aa653ffe7794d0729ccda6c51758e0c4fb68a1998107823d61

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