Malicious PDF — malware analysis report

Static analysis result for SHA-256 adcd9468523f05af…

MALICIOUS

PDF

41.4 KB Created: 2021-04-22 22:13:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 01b0586a3a28d796e17a7a349908c739 SHA-1: df3916999feb69e803b7907e2a9ceaad0ae7dd26 SHA-256: adcd9468523f05afcb2c3c9952aa3b5ae0456632c5e274ce804a59444dc7be47
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free Robux, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect users to a site that likely hosts further malicious content or exploits.

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-maniac-how-to-get-free-robux-game-hack PDF link annotation
    • http://the-specials.ch/images/how-to-get-free-robux-2021-no-human-verification.pdfIn PDF document text
    • http://the-specials.ch/images/how-to-hack-roblox-with-chrome-extensions.pdfIn PDF document text
    • http://the-specials.ch/images/free-robux-that-actually-works-no-gift-card.pdfIn PDF document text
    • http://the-specials.ch/images/como-descargar-roblox-gratis-y-hackeado.pdfIn PDF document text
    • http://the-specials.ch/images/how-to-use-hacks-on-roblox-pet-sim-2.pdfIn PDF document text
    • http://the-specials.ch/images/roblox-infinite-jump-script-hack.pdfIn PDF document text
    • http://the-specials.ch/images/unpatchable-robux-hack-2021.pdfIn PDF document text
    • http://the-specials.ch/images/best-free-exploits-roblox.pdfIn PDF document text
    • http://the-specials.ch/images/free-robux-websites-no-password.pdfIn PDF document text
    • http://the-specials.ch/images/roblox-hack-jailbreak-may.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_off00003fbd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3FBD 27156 bytes
SHA-256: 53b236f20a0d478b9016ace5e50370cc3632454f6494e5463da0361227c44bec
font_01_sfnt_off00007e3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3F 18900 bytes
SHA-256: 808022f93954b1cde9a44121809263c04736b299231b2d0d7def73085a98404b

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