Malicious PDF — malware analysis report

Static analysis result for SHA-256 380f0e5bfb01179b…

MALICIOUS

PDF

44.7 KB Created: 2021-06-09 12:15:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 635f4ad9db3d01eed3d5cb1a8730654a SHA-1: 15d463be4a8c818c252db7b8ded37e344bdc1ec3 SHA-256: 380f0e5bfb01179bed1e0700a54d64df3ab070d38461060780991970a612212f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many of which appear to be SEO-optimized for game-related terms like 'Robux' and 'Coin Master'. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests a deceptive or spamming intent. The document body, though heavily corrupted, contains a URL that aligns with the link farm's theme, indicating a potential lure for users seeking in-game currency or cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://netcdn.tw/app/431946152/how-to-get-free-robux-no-scam-november-game-hack
    • http://casabea.de/images/free-coins-for-planet-master-game_GM406889139.pdf
    • http://casabea.de/images/codes-to-get-free-robux_GM431946152.pdf
    • http://casabea.de/images/roblox-hack-forum_GM431946152.pdf
    • http://casabea.de/images/how-to-et-free-robux-in-a-roblo-game_GM431946152.pdf
    • http://casabea.de/images/free-robux-sites-that-work_GM431946152.pdf
    • http://casabea.de/images/cheats-for-roblox-pokemon-brick-bronze_GM431946152.pdf
    • http://casabea.de/images/can-i-get-robux-for-free_GM431946152.pdf
    • http://casabea.de/images/minecraft-for-chromebook-free_GM479516143.pdf
    • http://casabea.de/images/hacks-and-cheats-for-coin-master_GM406889139.pdf
    • http://casabea.de/images/coinmaster-free-spins-link_GM406889139.pdf
    • http://casabea.de/images/how-to-get-free-robux-hack-2021_GM431946152.pdf
    • http://casabea.de/images/coin-master-hacks-xyz_GM406889139.pdf
    • http://casabea.de/images/coin-master-hack-mobile_GM406889139.pdf
    • http://casabea.de/images/free-spins-coin-master-app_GM406889139.pdf
    • http://casabea.de/images/how-to-hack-linkmon99-roblox_GM431946152.pdf
    • http://casabea.de/images/how-to-get-roblox-premium-for-free_GM431946152.pdf
    • http://casabea.de/images/free-minecraft-alts_GM479516143.pdf
    • http://casabea.de/images/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://casabea.de/images/free-vip-roblox_GM431946152.pdf
    • http://casabea.de/images/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f09.bin
ed8f6347d2a402caf2578cfd1b8e87c3f69796d2efe192f4ccb62bc6a0abf88b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F09 25664 bytes
font_01_sfnt_off00008a4e.bin
03df7cb67f8ab5c5746a99206cb0626a946a7fef3a40789244af9b0a8b59f776		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4E 18884 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.