Malicious PDF — malware analysis report

Static analysis result for SHA-256 91b25dab696795a6…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 13:00:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 46dcc0eaa89d3c3a5b94dbe4168849f2 SHA-1: f30fd85c235e0e64706ee9b2d8661a2ec5f4ecd7 SHA-256: 91b25dab696795a6a29760afda2db0eedeb34845e1943541888c90e22c4a2bc4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are related to game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests a deceptive SEO tactic. The document body itself contains a primary URL that appears to be a lure for 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.tw/app/406889139/how-to-get-free-spins-in-coin-master-game-hack
    • http://digilibfisip.unla.ac.id/repository/naruto-roblox-cheat_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/free-robux-no-survey-2021-android_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-glitch-free-unlimited-robux_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-make-robux-free-and-fast_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/2021-bhop-hack-roblox_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-doungnquest-legandary-hack_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/youtube-you-to-get-free-robux_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/the-underground-war-roblox-cheats_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/comment-cheat-sur-mad-city-roblox_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/get-free-robux-without-human-verification_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/minecraft-hacked-apk_GM479516143.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-free-clothes-codes_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/coin-master-spins-for-free_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-shinobi-life-free-spins-2021_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-roblox-with-odium_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-generator_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-on-roblox-apocalypse-rising-2021_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/robuxian-youtube-page-secret-claim-free-robux_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/knife-server-roblox-hack-script_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003084.bin
b3c05052fcbd366e77a05d394fa3a806849b4cf49c292823bc374ab90043c2db		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3084 23376 bytes
font_01_sfnt_off0000655f.bin
11de4304e4fdf887d410d1e4a25cee46ae29c04a9263dbbe12b650d8207992b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x655F 18336 bytes

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