Malicious PDF — malware analysis report

Static analysis result for SHA-256 085067f773369ac1…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 13:49:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6e6e8b0a868bd40540fb2c6b02068b0a SHA-1: 9bcf7624248839c2fbdb075aa8772c0ae513275a SHA-256: 085067f773369ac1f64fc566fa3525c8cdf5479b540de9b36f28ff71a4b0d3dc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which are related to game cheats and hacks for popular games like Coin Master and Roblox. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and the ML classifier strongly suggests maliciousness. The document body, though partially corrupted, also contains URLs pointing to game-related content, reinforcing the lure for users to click on potentially malicious links.

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/coin-master-free-spin-game-game-hack
    • http://library.unissula.ac.id/fk/repository/play-minecraft-online-free_GM479516143.pdf
    • http://library.unissula.ac.id/fe/repository/collect-free-spins-coin-master_GM406889139.pdf
    • http://library.unissula.ac.id/fe/repository/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdf
    • http://library.unissula.ac.id/fk//repository/game-toolbox_GM479516143.pdf
    • http://library.unissula.ac.id/fk//repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdf
    • http://library.unissula.ac.id/fk/repository/how-to-play-roblox-bloxburg-for-free_GM431946152.pdf
    • http://library.unissula.ac.id/fe/repository/coin-master-hack-coins_GM406889139.pdf
    • http://library.unissula.ac.id/fe/repository/coin-master-free-spins-and-coins-generator_GM406889139.pdf
    • http://library.unissula.ac.id/fk/repository/how-to-cheat-in-leavels-booga-booga-roblox_GM431946152.pdf
    • http://library.unissula.ac.id/fe/repository/demon-roblox_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/cool-free-roblox-girls-hair_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/is-there-a-free-version-of-minecraft_GM479516143.pdf
    • http://library.unissula.ac.id/fk//repository/coin-master-hack-apk-download-latest-version_GM406889139.pdf
    • http://library.unissula.ac.id/fk/repository/free-spins-and-coins-from-coin-master-game_GM406889139.pdf
    • http://library.unissula.ac.id/fk/repository/how-to-hack-coin-master-with-game-guardian_GM406889139.pdf
    • http://library.unissula.ac.id/fe/repository/roblox-old-avatar_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/roblox-free-clothes-2021_GM431946152.pdf
    • http://library.unissula.ac.id/fe/repository/coin-master-invite-friends-free-spins_GM406889139.pdf
    • http://library.unissula.ac.id/fk/repository/free-roblox-accounts-dantdm_GM431946152.pdf
    • http://library.unissula.ac.id/fe/repository/como-robar-cuentas-de-roblox-con-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_off00003177.bin
28d4067c80db169155d31f2bd17794ac318a5f51f6ec36c66f5de6ea8d1b04ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x3177 22400 bytes
font_01_sfnt_off00006354.bin
ee008055d10f27297be3734796462f91ba90a8b64a2a08c15e7929fcf97c21d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6354 18432 bytes