Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa32574bf1a878db…

MALICIOUS

PDF

35.4 KB Created: 2021-06-28 20:35:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3505197bacda522bc9a8be841e08e18e SHA-1: 10782032ac1a38fbe7c88a160f3999cb30558e0a SHA-256: fa32574bf1a878dbb14b8e8c44081fcdea2814db1a5db59cefbdfcadd43274eb
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a 'download button' lure, suggesting an attempt to trick the user into downloading a payload. The ML classifier strongly indicates maliciousness, and the document body's content and associated URLs point towards a scam related to game cheats and currency. No scripts were extracted from this sample.

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/como-usar-cheat-engine-en-roblox-game-hack
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-login-play-online-for-free_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-robux-generator-without-human-verification_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-robux-and-tix-no-survey-or-download_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/coolest-free-roblox-items_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-get-a-free-face-on-roblox-mac_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-robux-codes-2021_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/emergency-response-liberty-county-roblox-free_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/minecraft-account-hacked_GM479516143.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-hack-robux-using-inspect-element-2021_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/high-school-life-hack-roblox_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-hack-your-password-on-roblox_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/bloxburg-roblox-money-hack_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-face-png-free_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-free-robux-generator-no-human-verification_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/get-free-robux-gift-card-codes_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-do-get-robux-for-free_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/aesthetic-roblox-outfits-free_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-admin-roblox-gamew_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-get-free-shirts-on-roblox-no-bc-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003350.bin
8e5353e3ef92d223adc2d6ce21b98cad27eabf30f0c689130c2e285514e629ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3350 22400 bytes
font_01_sfnt_off00006532.bin
37d897a22658cb6180ad1a02bd2d7f96f1654e69d0e10793c3308ab13105e396		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6532 19136 bytes

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