Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fe734ffb4c7563d…

MALICIOUS

PDF

43.5 KB Created: 2021-05-19 15:57:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4ca5d34908ef7238c636edbd2a5f5b34 SHA-1: ac5ac0fbe8ee97e1ca84a3063c1076c4a7ba7963 SHA-256: 5fe734ffb4c7563de749b4f0b42a5300f6492e08975c51213632012bcb8ed9c8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that form a link farm, likely intended to direct users to malicious content or further download stages. The document body and embedded URLs suggest a lure related to game hacks (Roblox, Coin Master), indicating a phishing or scam attempt. The presence of PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS heuristics strongly supports a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/roblox-hax-game-hack
    • http://www.friendshiptransport.net/images/coin-master-free-spins-link-ios_GM406889139.pdf
    • http://www.friendshiptransport.net/images/free-robux-codes-2021_GM431946152.pdf
    • http://www.friendshiptransport.net/images/lazy-blocks-com-free-robux_GM431946152.pdf
    • http://www.friendshiptransport.net/images/how-to-get-more-robux-for-free_GM431946152.pdf
    • http://www.friendshiptransport.net/images/coin-master-free-daily-spins_GM406889139.pdf
    • http://www.friendshiptransport.net/images/hack-coin-master-no-survey_GM406889139.pdf
    • http://www.friendshiptransport.net/images/how-to-make-robux-on-roblox_GM431946152.pdf
    • http://www.friendshiptransport.net/images/free-robux-codes-2021-real_GM431946152.pdf
    • http://www.friendshiptransport.net/images/how-to-actually-get-free-robux_GM431946152.pdf
    • http://www.friendshiptransport.net/images/free-robux-hack-no-human-verification_GM431946152.pdf
    • http://www.friendshiptransport.net/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdf
    • http://www.friendshiptransport.net/images/minecraft-hacks-18-9_GM479516143.pdf
    • http://www.friendshiptransport.net/images/free-robux-2021_GM431946152.pdf
    • http://www.friendshiptransport.net/images/roblox-website-robux_GM431946152.pdf
    • http://www.friendshiptransport.net/images/free-coin-master-spins-daily_GM406889139.pdf
    • http://www.friendshiptransport.net/images/best-site-for-free-coin-master_GM406889139.pdf
    • http://www.friendshiptransport.net/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • http://www.friendshiptransport.net/images/free-roblox-clothes-for-your-avatar_GM431946152.pdf
    • http://www.friendshiptransport.net/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://www.friendshiptransport.net/images/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004afa.bin
d8a74fda0646392fb335430040f4ec6cf035f8c228c6b418cd1ab4d72e66c8df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AFA 26960 bytes
font_01_sfnt_off00008895.bin
fe32b9a84fd76e39179a36863ed7420befb5e97ed4cdc4cc8cf112027e4fb10b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8895 18012 bytes

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