Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb7099fad7ea4cdd…

MALICIOUS

PDF

34.4 KB Created: 2021-06-17 16:52:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 27665e668056a884e50ce960b37c26e6 SHA-1: cadb6d547732b044f476670e53ffc168359e163f SHA-256: bb7099fad7ea4cdd955f5f292cdc6da37a6d134e1d56e868329b5ff88a610404
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that lead to pages offering game hacks and cheats, indicative of a phishing or scam attempt. The heuristic 'PDF_SEO_LINK_FARM' and the ML classifier strongly suggest malicious intent, likely to redirect users to malicious sites or download further malware. No scripts were extracted, but the document body and embedded URLs point towards a social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-hack-phantom-forces-on-roblox-game-hack
    • http://killebergsridsport.se/images/how-to-get-free-robux-easy-no-verification_GM431946152.pdf
    • http://killebergsridsport.se/images/free-card-collection-in-coin-master_GM406889139.pdf
    • http://killebergsridsport.se/images/coin-master-free-spin-and-coin_GM406889139.pdf
    • http://killebergsridsport.se/images/free-robux-codes-no-verification_GM431946152.pdf
    • http://killebergsridsport.se/images/roblox-hack-me-robux_GM431946152.pdf
    • http://killebergsridsport.se/images/coin-master-free-spins-usa-2021_GM406889139.pdf
    • http://killebergsridsport.se/images/roblox-medieval-hood-of-mystery-free_GM431946152.pdf
    • http://killebergsridsport.se/images/free-coin-master-cards_GM406889139.pdf
    • http://killebergsridsport.se/images/how-to-hack-roblox-passwords_GM431946152.pdf
    • http://killebergsridsport.se/images/minecraft-games-to-play-for-free_GM479516143.pdf
    • http://killebergsridsport.se/images/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdf
    • http://killebergsridsport.se/images/free-robux-hack-no-human-verification_GM431946152.pdf
    • http://killebergsridsport.se/images/roblox-free-clothes-hack_GM431946152.pdf
    • http://killebergsridsport.se/images/how-to-hack-coin-master-2021_GM406889139.pdf
    • http://killebergsridsport.se/images/roblox-voohack-com-free-robux_GM431946152.pdf
    • http://killebergsridsport.se/images/how-to-download-minecraft-for-free-on-pc_GM479516143.pdf
    • http://killebergsridsport.se/images/coin-master-hack-android-no-root_GM406889139.pdf
    • http://killebergsridsport.se/images/how-to-get-free-robux-without-verifying_GM431946152.pdf
    • http://killebergsridsport.se/images/minecraft-hack-download_GM479516143.pdf
    • http://killebergsridsport.se/images/coin-master-unlimited-free-spins-link-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002db6.bin
441cb6914bac08fde024aaaed8c59ba258e13226fe023ba051a1391f8cca19fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB6 22604 bytes
font_01_sfnt_off00006056.bin
567f1647b26bd7b3227615fa3bf6cf4c503748d0a53c0e55ce5ff81766237fff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6056 19480 bytes

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