Malicious PDF — malware analysis report

Static analysis result for SHA-256 4276d89c56d16210…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 11:15:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8e2817a6434043ddff23ee58243da696 SHA-1: 69ccf4dfe826d938eeb2668133d5eab142ce3510 SHA-256: 4276d89c56d16210ab799a49a7c29a87ddb7ce7483d1b3eb20b90fd8b6873c19
102 Risk Score

Malware Insights

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

The PDF document contains a high number of external links, many of which are SEO-optimized and point to game-related cheat and hack content. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful content or downloads. The document body itself contains a primary URL that aligns with the lure of free game items.

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-get-clothe-goku-ui-free-roblox-game-hack
    • http://muslib.unmus.ac.id/repository/can-you-cheat-engine-roblox_GM431946152.pdf
    • http://muslib.unmus.ac.id/repository/coin-master-34-4-free-download_GM406889139.pdf
    • http://muslib.unmus.ac.id//repository/coin-master-play-online-free_GM406889139.pdf
    • http://muslib.unmus.ac.id//repository/how-to-get-roblox-money_GM431946152.pdf
    • http://muslib.unmus.ac.id/repository/its-free-real-estate-roblox_GM431946152.pdf
    • http://muslib.unmus.ac.id//repository/free-cheat-codes-for-coin-master_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/aristois-minecraft-hack_GM479516143.pdf
    • http://muslib.unmus.ac.id//repository/how-do-u-hack-roblox_GM431946152.pdf
    • http://muslib.unmus.ac.id//repository/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/how-to-get-admin-commands-on-roblox-for-free_GM431946152.pdf
    • http://muslib.unmus.ac.id//repository/coin-master-on-facebook_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdf
    • http://muslib.unmus.ac.id/repository/how-to-hack-coin-master-game-without-verification_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/free-roblox-accounts-with-obc-2021-bugmenot_GM431946152.pdf
    • http://muslib.unmus.ac.id/repository/how-to-hack-someone-on-roblox_GM431946152.pdf
    • http://muslib.unmus.ac.id/repository/coin-master-hack-september-2021_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/best-site-for-free-coin-master-free-spins_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/how-hack-in-roblox_GM431946152.pdf
    • http://muslib.unmus.ac.id/repository/hack-coin-master-apk-2021_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/2021-free-spins-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_off00002f4f.bin
cbd92b222bac0c38c6b832a390945119d7c2f95980d46e00390781ed13f397b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4F 22464 bytes
font_01_sfnt_off0000612f.bin
b80f175cfc404fc5b552905a6bc53974d7dcf8a9b5ccadc98d5e1fcdcb1ccb9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612F 19516 bytes

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