Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7434c6bd0b28c6…

MALICIOUS

PDF

40.5 KB Created: 2021-04-23 10:13:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: ce48465396d9313517291c4ecef4d798 SHA-1: 1f2e8df714a468a0c66ecf9fa89b722283d6518a SHA-256: 1e7434c6bd0b28c677eabd5a41eab3f8505eda77e695803956c436162202086a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free shirts from Roblox' and links to a suspicious URL, indicating a phishing or scam attempt. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly suggests this, and the ML classifier also flagged it as malicious. The embedded URLs are likely used to redirect users to malicious sites or download further malware.

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-shirts-from-roblox-game-hack PDF link annotation
    • http://www.dimalcco.com/images/android-fast-roblox-robux-hack.pdfIn PDF document text
    • http://www.dimalcco.com/images/free-promo-codes-roblox-2021-june.pdfIn PDF document text
    • http://www.dimalcco.com/images/free-roblox-groups-with-funds.pdfIn PDF document text
    • http://www.dimalcco.com/images/boku-no-roblox-remastered-lv-up-hack.pdfIn PDF document text
    • http://www.dimalcco.com/images/how-to-hack-roblox-accounts-2021-march.pdfIn PDF document text
    • http://www.dimalcco.com/images/pocket-pirates-roblox-cheat.pdfIn PDF document text
    • http://www.dimalcco.com/images/best-roblox-hacks-2021.pdfIn PDF document text
    • http://www.dimalcco.com/images/what-is-the-free-robux-code.pdfIn PDF document text
    • http://www.dimalcco.com/images/roblox-ios-cheats.pdfIn PDF document text
    • http://www.dimalcco.com/images/free-roblox-accounts-with-robux-2021-april.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_off00003fd6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3FD6 26268 bytes
SHA-256: 37d0caf003859a056a90163e72086e4af9748245aabdd5f11150d6cb394c67eb
font_01_sfnt_off00007b9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9C 18596 bytes
SHA-256: 31abd9962f721806c6f4decc5e0c65320f6d26d466948a4aabfa11301f67bfbe

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