Malicious PDF — malware analysis report

Static analysis result for SHA-256 172bf3c0e7f71038…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 15:38:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f9a834b2da22fa87bd589a54038717dd SHA-1: 3a54fb9e374a548ace671708bc0274b7a3713fb6 SHA-256: 172bf3c0e7f710389cb62f0ee3f158638a82f19271ed8a2d596929c5dc53f770
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 hacking and cheats. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests a tactic to distribute malicious content or phish for credentials. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful sites.

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/how-to-hack-grand-blox-auto-roblox-game-hack
    • http://library.acehresearch.org/repository/fbchampion-com_GM406889139.pdf
    • http://library.acehresearch.org/repository/coin-master-free-spins-instagram_GM406889139.pdf
    • http://library.acehresearch.org/repository/how-to-get-free-robux-codes-generator_GM431946152.pdf
    • http://library.acehresearch.org/repository/how-to-hack-in-roblox-legendary-football_GM431946152.pdf
    • http://library.acehresearch.org/repository/roblox-group-free-robux_GM431946152.pdf
    • http://library.acehresearch.org/repository/spin-link-coin-master_GM406889139.pdf
    • http://library.acehresearch.org/repository/free-roblox-toy-codes-not-used_GM431946152.pdf
    • http://library.acehresearch.org/repository/roblox-prison-life-hacking-sex_GM431946152.pdf
    • http://library.acehresearch.org/repository/omg-insane-way-to-get-free-robux_GM431946152.pdf
    • http://library.acehresearch.org/repository/roblox-brocken-bones-4-ban-cheat_GM431946152.pdf
    • http://library.acehresearch.org/repository/military-base-roblox-free-model_GM431946152.pdf
    • http://library.acehresearch.org/repository/free-coin-master-spins_GM406889139.pdf
    • http://library.acehresearch.org/repository/coin-master-cheat-engine-hack_GM406889139.pdf
    • http://library.acehresearch.org/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • http://library.acehresearch.org/repository/coin-master-hack-tool-apk-download_GM406889139.pdf
    • http://library.acehresearch.org/repository/master-coin-free-link_GM406889139.pdf
    • http://library.acehresearch.org/repository/coin-master-hack-download-apk_GM406889139.pdf
    • http://library.acehresearch.org/repository/how-to-dop-the-flying-hack-in-roblox_GM431946152.pdf
    • http://library.acehresearch.org/repository/coin-master-free-spins-generator-no-verification_GM406889139.pdf
    • http://library.acehresearch.org/repository/free-roblox-card-1m-codes_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e8e.bin
4f622e19d27d49fddb9fd19fe886a134d0d04a4daa1a8a4bae688c81bfc64b9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E8E 22420 bytes
font_01_sfnt_off0000609a.bin
c82b8d190928c830adc211195041953ddd0b6b10b2293817be28a374f781f780		 pdf-font-stream PDF embedded font (sfnt) at offset 0x609A 19240 bytes

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