Malicious PDF — malware analysis report

Static analysis result for SHA-256 4abc2b13c8a9c037…

MALICIOUS

PDF

43.3 KB Created: 2021-05-17 13:14:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3614d6d294305b51d88a1da48c3c6e1a SHA-1: a50648753c8815108b3d6347fe378bf92588d2d7 SHA-256: 4abc2b13c8a9c037cef6c2248e6edc48d265a8c1871bcb1d44d083a8f30bf832
102 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs and a heuristic firing for a 'PDF_SEO_LINK_FARM' indicates a large number of external links, many of which point to other PDF files. The document body, though partially corrupted, contains text related to 'Coin Master' and a URL that suggests a game hack, aligning with a social engineering lure. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the idea that the document is designed to trick users into clicking links and downloading files.

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/406889139/coin-master-heaven-game-hack
    • http://demenagementlandry.com/images/coin-master-hack-https-coinms-net_GM406889139.pdf
    • http://demenagementlandry.com/images/totally-free-coin-master-spins-2021_GM406889139.pdf
    • http://demenagementlandry.com/images/www-roblox-com-robux-free_GM431946152.pdf
    • http://demenagementlandry.com/images/coin-master-free-2021-spin-link_GM406889139.pdf
    • http://demenagementlandry.com/images/free-roblox-hair-to-wear_GM431946152.pdf
    • http://demenagementlandry.com/images/free-spin-sites-for-coin-master_GM406889139.pdf
    • http://demenagementlandry.com/images/free-coin-master-gifts_GM406889139.pdf
    • http://demenagementlandry.com/images/roblox-free-robux-no-human-verification_GM431946152.pdf
    • http://demenagementlandry.com/images/coin-master-free-cards-link_GM406889139.pdf
    • http://demenagementlandry.com/images/free-robux-real-working_GM431946152.pdf
    • http://demenagementlandry.com/images/www-claim-gg-to-earn-free-robux_GM431946152.pdf
    • http://demenagementlandry.com/images/how-to-hack-minecraft-pe_GM479516143.pdf
    • http://demenagementlandry.com/images/minecraft-world-free-download_GM479516143.pdf
    • http://demenagementlandry.com/images/free-robux-no-scam_GM431946152.pdf
    • http://demenagementlandry.com/images/coin-master-free-spins-promo-code_GM406889139.pdf
    • http://demenagementlandry.com/images/minecraft-mobile-free_GM479516143.pdf
    • http://demenagementlandry.com/images/roblox-hacked-version_GM431946152.pdf
    • http://demenagementlandry.com/images/moonactive-coin-master-free-spins-link_GM406889139.pdf
    • http://demenagementlandry.com/images/coin-master-com_GM406889139.pdf
    • http://demenagementlandry.com/images/get-minecraft-windows-10-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004be3.bin
0987467eaa1ec9508e30ed9e6c45f57c6a873eaac8f2c632114d24a5d4ddcf18
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BE3 26556 bytes
font_01_sfnt_off000088a0.bin
fef13a17f0333e264b660aea2ea076d90d1007d0c35aaf86fed193eccf6e0756
pdf-font-stream PDF embedded font (sfnt) at offset 0x88A0 17660 bytes