Malicious PDF — malware analysis report

Static analysis result for SHA-256 71bfacc2d93a727f…

MALICIOUS

PDF

34.6 KB Created: 2021-06-25 18:25:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cbb453e0deb472efab30eec5fe968171 SHA-1: d7992d7ab9ebb1ffb8ceaab9d55d9b05eb5849ca SHA-256: 71bfacc2d93a727fe24c65fc94c0f140a06e20b40c9464d68cf9cee04d283a26
102 Risk Score

Malware Insights

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

This PDF document contains numerous external links, many of which are SEO-optimized and point to sites offering game cheats and hacks. The ML classifier strongly indicates maliciousness, and the presence of a 'download button' lure suggests an attempt to trick users into downloading a payload. The document's content and structure are consistent with a phishing or malware distribution scheme.

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/free-roblox-2021-agreeing-game-hack
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/roblox-cheats-for-xbox-one_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/i-was-hacked-on-roblox_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/roblox-highschool-cheats_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/free-premote-group-on-roblox_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/how-to-speedhack-roblox-without-cheat-engine_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/roblox-exploit-hack-free-download_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/free-robux-codes-no-verification_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/how-to-get-free-faces-promocodes-on-roblox_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/hack-roblox-hack-robux_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/roblox-lumber-tycoon-cheat-engine-2021_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/free-robux-not-a-scam-no-human-verification_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/thinking-simulator-hack-roblox_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/bloxpink-free-robux_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/minecraft-java-free_GM479516143.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/minecraft-com-free_GM479516143.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/free-roblox-itrems_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/free-uncopylocked-roblox-games_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/roblox-kat-hacks_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003075.bin
25c27613ef839d6b4a210c1ccebd2a188f4458794f47b177c7e84a99c05555b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3075 22276 bytes
font_01_sfnt_off000061d5.bin
9a00db290cf06c02a24440f4ccfe07538e4d0ff8aa24ee1f8dbc65c0a87072cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61D5 19172 bytes

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