Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe6f50d41e791ac6…

MALICIOUS

PDF

35.9 KB Created: 2021-06-30 01:28:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f73a52455a56517b29a35645737fa3a0 SHA-1: c48f0317c3c3f8a28960a8659198db5374a30995 SHA-256: fe6f50d41e791ac6a09237ad2159552a7d0158d92f476103814dabbd5f144843
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are SEO-optimized and point to pages offering game cheats or currency. The ML classifier strongly indicated maliciousness, and the presence of a download button lure suggests an attempt to trick users into downloading further malicious content. The document's content and structure are consistent with a phishing or scam campaign designed to distribute malware.

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/roblox-free-vip-server-jailbreak-2021-game-hack
    • http://lib.smklabor.sch.id/repository/how-to-get-free-roblox-without-downloading-anything_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/robux-hack-2021-download_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/guide--coin-master-free-tips_GM406889139.pdf
    • http://lib.smklabor.sch.id/repository/best-minecraft-hacked-client_GM479516143.pdf
    • http://lib.smklabor.sch.id/repository/easy-steps-on-how-to-get-free-robux_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/how-to-get-roebucks_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/will-minecraft-dungeons-be-free_GM479516143.pdf
    • http://lib.smklabor.sch.id/repository/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdf
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-no-verification-no-survey_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-2021-no-human-verification_GM406889139.pdf
    • http://lib.smklabor.sch.id/repository/how-to-get-free-25-robux_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/hacked-roblox-accounts-list_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/coin-master-free-coins-generator_GM406889139.pdf
    • http://lib.smklabor.sch.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdf
    • http://lib.smklabor.sch.id/repository/roblox-games-com-free_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/free-gold-cards-for-coin-master_GM406889139.pdf
    • http://lib.smklabor.sch.id/repository/roblox-hack-free-download-for-android_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/hack-roblox-adopt-me-money-infinite_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/free-spin-coin-master-link-download_GM406889139.pdf
    • http://lib.smklabor.sch.id/repository/btools-roblox-paid-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031cd.bin
e192247f88f2bc1a5f7cd6e00313c89490cc3d164893d0337dfc2d4b07885712		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31CD 22832 bytes
font_01_sfnt_off0000648b.bin
78693b05290a2c2783d7e777cdeb6cdbb6ea7f684531aab8f91f0ac35d41234a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x648B 19932 bytes

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