Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dfb0e201e3cb1ee…

MALICIOUS

PDF

45.1 KB Created: 2021-05-16 10:36:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9ca8b1410c14cb904f9dc97d4e41d4c1 SHA-1: e457b57a15b0d35a4b326c2dd1504fdcaf8b9742 SHA-256: 0dfb0e201e3cb1eebc94b50e2e67b17e9ccdec48eeb1b69fb8c2ef6d6952ae1a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links to external websites, many of which are SEO-optimized to appear as legitimate sources for game hacks and currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a coordinated effort to direct users to potentially malicious sites. The ML classifier also strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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://www.aldopesetti.com/images/how-to-get-free-robux-inspect_GM431946152.pdf
    • http://www.aldopesetti.com/images/free-robux-no-human-verification-no-survey_GM431946152.pdf
    • http://www.aldopesetti.com/images/free-robux-with-no-verification-2021_GM431946152.pdf
    • http://www.aldopesetti.com/images/coin-master-hack-spin-160-pro_GM406889139.pdf
    • http://www.aldopesetti.com/images/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdf
    • http://www.aldopesetti.com/images/free-bedrock-minecraft_GM479516143.pdf
    • http://www.aldopesetti.com/images/how-to-get-free-robux-generator_GM431946152.pdf
    • http://www.aldopesetti.com/images/how-to-get-free-robux-hack_GM431946152.pdf
    • http://www.aldopesetti.com/images/get-more-robux_GM431946152.pdf
    • http://www.aldopesetti.com/images/can-you-give-me-free-robux_GM431946152.pdf
    • http://www.aldopesetti.com/images/get-roebucks-com_GM431946152.pdf
    • http://www.aldopesetti.com/images/coin-master-link-for-spins_GM406889139.pdf
    • http://www.aldopesetti.com/images/coin-master-free-spin-app-iphone_GM406889139.pdf
    • http://www.aldopesetti.com/images/roblox-sexually_GM431946152.pdf
    • http://www.aldopesetti.com/images/how-do-you-hack-minecraft_GM479516143.pdf
    • http://www.aldopesetti.com/images/i-got-hacked-on-roblox_GM431946152.pdf
    • http://www.aldopesetti.com/images/minecraft-diamond-finder-hack_GM479516143.pdf
    • http://www.aldopesetti.com/images/how-to-get-free-robux-com_GM431946152.pdf
    • http://www.aldopesetti.com/images/free-coins-coin-master-haktuts_GM406889139.pdf
    • http://www.aldopesetti.com/images/free-robux-site_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047d9.bin
438eee2250250ee722c3c26caf4df01e809cb70130e806e995233c764f975b50		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47D9 24796 bytes
font_01_sfnt_off00008143.bin
dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8143 4020 bytes
font_02_sfnt_off00008eca.bin
34dd8c80f69d0f68a5b5993274c8f1bdeef3254478921523cc39dd8566b84a5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ECA 17884 bytes

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