Malicious PDF — malware analysis report

Static analysis result for SHA-256 bab793629581d566…

MALICIOUS

PDF

33.7 KB Created: 2021-06-22 08:08:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 58f18aed147a7ae24476b773c68fcf04 SHA-1: f499f3dce0f129631ea11094868148834bf245cc SHA-256: bab793629581d5664f8612679c0ce235c1df5298a57cd43785e23e7339ce7142
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, primarily to sites offering game-related cheats and rewards, suggesting a lure for users to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a link farm further supports this assessment. The document's purpose appears to be directing users to external sites that may host malware or phishing content.

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/479516143/minecraft-online-free-no-download-game-hack
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/coin-master-rewards-free-spins_GM406889139.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/roblox-verification_GM431946152.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/free-robux-without-human-verification-2021_GM431946152.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/free-robux-com_GM431946152.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/coin-master-hack-version-2021_GM406889139.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/how-to-hack-any-account-on-roblox-2021_GM431946152.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-may-11-2021_GM406889139.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/100-free-spins-coin-master_GM406889139.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/coin-master-fan-page-giveaway_GM406889139.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/roblox-free-robux-generator_GM431946152.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/how-to-earn-robux-for-free-2021_GM431946152.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/free-coin-master-spin-app_GM406889139.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/free-robux-codes-no-verification-2021_GM431946152.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-for-free_GM431946152.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/free-executor-roblox_GM431946152.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/roblox-hack-2021_GM431946152.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/free-spins-for-coin-master-app_GM406889139.pdf
    • http://samarpartners.com/new/public/ckfinder/userfiles/files/how-to-change-roblox-name-for-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fd3.bin
1e8f4e83185dfd9d3fb017fae21428107e96f7953fecfbb54c353552c57db448		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD3 22364 bytes
font_01_sfnt_off00006047.bin
18e47e4def907078383b9138cbb43c4b29763ef48c815ae270633e0c830f6246		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6047 18576 bytes

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