Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d5ba9750882421e…

MALICIOUS

PDF

34.8 KB Created: 2021-06-29 10:11:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 945a3577ce542ab05843a39a8254acc9 SHA-1: f693b7909ad4c6b95167580b455f43376ea84a24 SHA-256: 1d5ba9750882421ee99510996bb38ea0a8865986f520f1dfd797b37d03071a29
142 Risk Score

Malware Insights

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

This PDF document employs a lure related to hacking online games to entice users. It contains a large number of external links, many of which point to other PDF documents with similar SEO-friendly titles, suggesting a link farm designed to attract traffic. The ML classifier strongly indicated maliciousness, and the presence of a password archive lure suggests an attempt to bypass security controls.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/how-to-hack-roblox-assassin-2021-game-hack
    • http://library.apsidoarjo.ac.id/repository/cheat-engine-not-working-in-roblox_GM431946152.pdf
    • http://library.apsidoarjo.ac.id//repository/wurst-commands_GM479516143.pdf
    • http://library.apsidoarjo.ac.id/repository/gain-free-bux-for-roblox-free-download-2021_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/roblox-pink-free-robux_GM431946152.pdf
    • http://library.apsidoarjo.ac.id//repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-spins-on-coin-master-game_GM406889139.pdf
    • http://library.apsidoarjo.ac.id/repository/free-items-with-roblox-card-walmart_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/roblox-hack-999999-robux-no-verification_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/hack-coin-master-xyz_GM406889139.pdf
    • http://library.apsidoarjo.ac.id/repository/roblox-money-hack-vehicle-simulator_GM431946152.pdf
    • http://library.apsidoarjo.ac.id//repository/how-to-get-roebucks-in-roblox_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/free-robux-site_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/infinite-yield-hack-roblox_GM431946152.pdf
    • http://library.apsidoarjo.ac.id//repository/roblox-robux-hack_GM431946152.pdf
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack-ios-without-verification_GM406889139.pdf
    • http://library.apsidoarjo.ac.id/repository/check-cashed-roblox-hack_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/how-do-i-get-robux_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/free-robux-hack-no-password_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/www-roblox-cheat-us_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/free-robux-that-only-needs-your-password-totally_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030e8.bin
e5d4e545d1addb8b0a5b0712cd9b40962087f59d9731c30b72b62f771a954419		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30E8 22152 bytes
font_01_sfnt_off00006219.bin
f45b38d3a887b7db3466a3c2a18d21e3529cd2bdeabb4bdd2cfca1dda82c4147		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6219 19340 bytes

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