Malicious PDF — malware analysis report

Static analysis result for SHA-256 e15aebc33f018ea6…

MALICIOUS

PDF

35.2 KB Created: 2021-07-02 03:39:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d4dbe49fc51da0500e7e1e8237d32a6a SHA-1: 50ff00e35b9cb7e06e841d0cbf7a8b9ee1a32488 SHA-256: e15aebc33f018ea64318a5b3a75a0cd166cc7f8e609710876312b154655b4f5b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs and a document body that explicitly promotes "hacks" for popular games, indicating a lure for users to download potentially malicious content. The PDF_SEO_LINK_FARM heuristic firing suggests a large number of these links are generated to appear as legitimate content, further supporting a malicious intent to trick users. The ML_NYX_PDF_MALICIOUS score of 0.997996 strongly indicates maliciousness.

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/how-to-hack-robux-on-roblox-mobile-game-hack PDF link annotation
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/how-to-change-money-in-roblox-using-cheat-engine_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/free-robux-no-apps-no-human-verification_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/how-to-hack-roblox-with-developer-tools_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/get-bucks-me-free-robux_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/how-to-get-roblox-fly-hacks_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/hack-a-roblox-player_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/flames-free-robux_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/how-to-get-free-robux-2021-legally_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/roblox-but_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/keneco-kitten-says-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000322c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322C 22504 bytes
SHA-256: ac2da1be9d1ba46c14753cd9c8e6d35a095197d43ecc7283b26db78b64d2947f
font_01_sfnt_off00006422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6422 19276 bytes
SHA-256: 36dce990c769d5da3ac3f09f79474765e6887d1f416e3a4612d9a62772ab0cea

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