Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3f4876e697d6c67…

MALICIOUS

PDF

46.2 KB Created: 2021-06-02 17:53:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c376bb43497e4b0f39042c22d0cfa0f8 SHA-1: 177c4c95c006c6841b0e9f0079b0813ebdea5fd9 SHA-256: c3f4876e697d6c67684cac1f6796df5b56b858a348336e32e5b3968923f36f08
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are related to game hacks and cheats, suggesting a link farm or SEO spam tactic. The ML classifier also flagged this PDF as malicious. The primary goal appears to be redirecting users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.xyz/app/431946152/escaping-handcuffs-cheat-jailbreak-roblox-game-hack
    • http://iba.org.fj/wp-content/uploads/fsqm-files/adopt-me-roblox-hacks_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/how-to-get-hacks-on-roblox_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-tix-on-roblox-2021_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/roblox-dynamic-ship-simulator-hack_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/how-get-free-stuff-in-roblox_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/is-minecraft-free-on-ps4_GM479516143.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/get-free-followers-on-tiktok_GM835599320.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/como-tener-dinero-infinito-roblox-high-school-hack_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-robux-generator-pro_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/cheat-engine-roblox-hack-download-free_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-robux-forumscom_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-promo-codes-for-robux_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-robux-codes-2021-real_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/roblox-passwort-hacken_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/how-to-dress-like-a-hacker-in-roblox_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/get-free-robux-no-human-verification_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/asshurt-roblox-free_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/roblox-hack-free-robux-on-ipad_GM431946152.pdf
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-robux-no-verification-or-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f6c.bin
e9e059319a74be458b996e8e5c2eab767fd849c16232f63474599c4562a2efcf
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F6C 28092 bytes
font_01_sfnt_off00008e88.bin
3b1fd981f2f18c59fcf10036b145b63c2f291ee7be5f9962b62fe0f6e692e717
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E88 19516 bytes