Malicious PDF — malware analysis report

Static analysis result for SHA-256 4821f5b3fd8acbcd…

MALICIOUS

PDF

40.9 KB Created: 2021-05-13 08:35:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c8e6c29537eada3fdbf2ff5ccd6e4760 SHA-1: 91e33398dfbe4ce29b4e0a26fff1c3a1c4be4d51 SHA-256: 4821f5b3fd8acbcd5a11516c1eb045538b42d367d6359dd0111818725e692bf5
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, identified as a link farm, that point to external sites. The ML classifier also flagged this PDF as malicious. The document body, though corrupted, contains references to game hacks and free credits, suggesting a lure to trick users into visiting these malicious links. No scripts were extracted, but the presence of a link farm and the ML detection strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/free-coin-master-credit-game-hack
    • http://parsbaft.com/images/coin-master-free-spins-2021_GM406889139.pdf
    • http://parsbaft.com/images/roblox-fly-hack_GM431946152.pdf
    • http://parsbaft.com/images/coin-master-fb-free-spins-link_GM406889139.pdf
    • http://parsbaft.com/images/coin-master-free-spins-2021-blogspot_GM406889139.pdf
    • http://parsbaft.com/images/free-spin-coin-master-new-link_GM406889139.pdf
    • http://parsbaft.com/images/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdf
    • http://parsbaft.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdf
    • http://parsbaft.com/images/free-ways-to-get-robux_GM431946152.pdf
    • http://parsbaft.com/images/free-robux-codes-not-used_GM431946152.pdf
    • http://parsbaft.com/images/10-robux_GM431946152.pdf
    • http://parsbaft.com/images/how-do-u-get-free-robux-2021_GM431946152.pdf
    • http://parsbaft.com/images/free-robux-link_GM431946152.pdf
    • http://parsbaft.com/images/free-spin-in-coin-master_GM406889139.pdf
    • http://parsbaft.com/images/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • http://parsbaft.com/images/hacks-for-minecraft-bedrock_GM479516143.pdf
    • http://parsbaft.com/images/roblox-jailbreak-hack-download_GM431946152.pdf
    • http://parsbaft.com/images/how-to-get-free-coins-on-coin-master_GM406889139.pdf
    • http://parsbaft.com/images/roblox-free-hats_GM431946152.pdf
    • http://parsbaft.com/images/get-more-free-spins-on-coin-master_GM406889139.pdf
    • http://parsbaft.com/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004892.bin
9d8230f67719923449dadb8c1436306f3afbc9b2366e4141c8e8d5112744dd79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4892 23920 bytes
font_01_sfnt_off00007eba.bin
34dd8c80f69d0f68a5b5993274c8f1bdeef3254478921523cc39dd8566b84a5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBA 17884 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.