Malicious PDF — malware analysis report

Static analysis result for SHA-256 88958fbc84825abf…

MALICIOUS

PDF

50.5 KB Created: 2021-06-03 05:23:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a8ee315db0a464db65b47620a8def0d9 SHA-1: e4d3d1a6b0e8f899df9e98619f14c0b512ca7d4a SHA-256: 88958fbc84825abf94966bdb38122f65a434514e8776d9a9091cd371ee18935b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The document body, though partially corrupted, contains references to game hacks and includes a URL that likely leads to a malicious payload or phishing content. The presence of multiple external links suggests an attempt to redirect users to potentially harmful websites, aligning with a spearphishing attachment attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9779

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 https://netcdn.online/app/406889139/coin-master-extra-spins-game-hack
    • http://librarystkippgribl.com/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • http://librarystkippgribl.com//repository/www-roblox-robux_GM431946152.pdf
    • http://librarystkippgribl.com/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdf
    • http://librarystkippgribl.com/repository/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdf
    • http://librarystkippgribl.com/repository/minecraft-the-complete-handbook-collection_GM479516143.pdf
    • http://librarystkippgribl.com//repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
    • http://librarystkippgribl.com/repository/free-spins-on-coin-master-cheat_GM406889139.pdf
    • http://librarystkippgribl.com/repository/coin-master-tips_GM406889139.pdf
    • http://librarystkippgribl.com/repository/clients-minecraft_GM479516143.pdf
    • http://librarystkippgribl.com//repository/coin-master-daily-free-coins-link-today_GM406889139.pdf
    • http://librarystkippgribl.com/repository/wwwcoin-master-hack-game-download_GM406889139.pdf
    • http://librarystkippgribl.com//repository/how-do-you-get-free-robux-without-paying_GM431946152.pdf
    • http://librarystkippgribl.com//repository/cm-spin-link_GM406889139.pdf
    • http://librarystkippgribl.com//repository/coin-master-free-spins-link-today-facebook_GM406889139.pdf
    • http://librarystkippgribl.com/repository/roblox-fly-hack_GM431946152.pdf
    • http://librarystkippgribl.com/repository/coin-master-daily-free-spins-link_GM406889139.pdf
    • http://librarystkippgribl.com//repository/minecraft-ps4-code-free_GM479516143.pdf
    • http://librarystkippgribl.com//repository/coin-master-free-2021_GM406889139.pdf
    • http://librarystkippgribl.com//repository/http-blackgamesus-coinmasterhack_GM406889139.pdf
    • http://librarystkippgribl.com/repository/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052f3.bin
652dd3bf63e81730ca66c1e98d22540982b7aa26f3a39c91d8841732a54567e4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52F3 32828 bytes
font_01_sfnt_off0000988f.bin
60662f3c3672c78d4c606544f7dd1595222029149cce1a60031b46b081ae9500		 pdf-font-stream PDF embedded font (sfnt) at offset 0x988F 3232 bytes
font_02_sfnt_off0000a3b5.bin
e4978cd717731c86087c350f2d5b7f64f0cbe84d579e2f10df1b5c46c99d20e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3B5 17932 bytes

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