Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c9ed11e07395f8a…

MALICIOUS

PDF

33.2 KB Created: 2021-07-01 22:22:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4f727c4e2b8ad2e7617aaa3a0039e896 SHA-1: 1adf0517ff8d3e26b11f28e19b4459ac97efddf2 SHA-256: 0c9ed11e07395f8a744241cfddb4feeec03b2b21eefafee0946e99ace6546212
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a document body that promotes 'Free Robux' and game hacks, indicating a scam or phishing attempt. The heuristic PDF_SEO_LINK_FARM indicates a large number of external links, likely to malicious or scam sites. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the presence of numerous URLs suggests the document's primary purpose is to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/free-robux-scam-message-copy-and-paste-game-hack
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-get-robux-2021-hack_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/youtube-yammy-xox-roblox-hacking_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-can-i-get-robux_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-get-catalog-items-for-free-roblox-no-hack_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-games-80_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/roblox-cheat-money-lumber-tycoon-2_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-fall-roblox_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-find-hacker-matrix-egg-in-roblox_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-free-spins-2021-link_GM406889139.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/roblox-jailbreak-hack-mobile_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/get-free-robux-no-human-verification_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-spin-link-for-coin-master_GM406889139.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-gratuitement_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/roblox-free-model-roller-coaster_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/roblox-obby-gives-you-free-robux-july-no-password-2021_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/roblox-free-face-2021_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-for-free_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/telecharger-roblox-free_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-codes-no-survey-2021-october_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c7d.bin
60a0564ef4c2db24076dd03b629649809de83dcddc834c71efb49dd523fe6e46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7D 21172 bytes
font_01_sfnt_off00005a7f.bin
c4553dbdf36a5720d86615112afce3c5557d6d6ea4c4a92c8e7056dd35629129		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A7F 19960 bytes

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