Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdf762835e24df40…

MALICIOUS

PDF

46.5 KB Created: 2021-04-22 15:17:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 6c2cccc05e57ab489f1ec8bb1f868890 SHA-1: e567d11dac56800718793df2d1b45a9f8d219de3 SHA-256: fdf762835e24df401efda3defd24036451c2915c23efc4a9313d2d1f86c9ff11
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple heuristics indicating a lure for game hacks and free in-game currency, specifically targeting Roblox players. It embeds a primary malicious URL, https://netsecure.pro/app/431946152/easy-quick-free-robux-game-hack, which is likely used to deliver a secondary payload or conduct phishing. The document body also contains a call to action, 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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/easy-quick-free-robux-game-hack PDF link annotation
    • http://library.thamrin.ac.id/repository/play-hacked-roblox.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/hacker-roblox-skin.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/bst-way-for-free-robux-no.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/games-that-will-actually-give-you-free-robux.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/roblox-anime-fighting-simulator-hack.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/is-friending-a-roblox-hacker-bad.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/free-roblox-maps.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/how-to-hack-a-friend-in-roblox.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/how-to-get-free-robux-in-2-minutes-roblox.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/roblox-shark-hack.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_off00003fca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3FCA 38368 bytes
SHA-256: f7b33f3c06e4b4a0fbf98cf0c940e7138aacc9edea910f2d068de9f1d2f8c12b
font_01_sfnt_off000092ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92AD 18872 bytes
SHA-256: a07a29afd0e905b70baae63465a8badca52382f9d183389b29506e09f57b0731

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