Malicious PDF — malware analysis report

Static analysis result for SHA-256 61500dc0a268f832…

MALICIOUS

PDF

42.8 KB Created: 2021-05-12 09:30:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: af3802e872acdba9b0d4f62e3344a48c SHA-1: 01330cede28a1726236ee250a28647c503ec31ae SHA-256: 61500dc0a268f832c4a635230824b5e9cb9b432f98a10c6db6ee4a63b6aaf09b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links to external websites, many of which are structured as SEO-optimized PDF links, suggesting a link farm. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate malicious intent. The document body, though partially corrupted, contains a URL pointing to a Minecraft download, and the embedded links predominantly relate to game cheats and downloads, likely serving as a lure for users to access malicious 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/479516143/minecraft-pc-download-free-full-version-game-hack
    • http://bogatyr.com/images/free-vip-roblox_GM431946152.pdf
    • http://bogatyr.com/images/how-to-get-free-robux-2021_GM431946152.pdf
    • http://bogatyr.com/images/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdf
    • http://bogatyr.com/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • http://bogatyr.com/images/withdraw-robux_GM431946152.pdf
    • http://bogatyr.com/images/how-to-get-free-snacks-on-coin-master_GM406889139.pdf
    • http://bogatyr.com/images/coin-master-mod-apk-latest-version-free-download_GM406889139.pdf
    • http://bogatyr.com/images/coin-master-hack-online-no-human-verification_GM406889139.pdf
    • http://bogatyr.com/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdf
    • http://bogatyr.com/images/coin-master-hack-online-2021_GM406889139.pdf
    • http://bogatyr.com/images/coin-master-hack-apk-2021-download_GM406889139.pdf
    • http://bogatyr.com/images/doctor-louie-roblox_GM431946152.pdf
    • http://bogatyr.com/images/robux-free-2021_GM431946152.pdf
    • http://bogatyr.com/images/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdf
    • http://bogatyr.com/images/coin-master-daily-free-spins-link-download_GM406889139.pdf
    • http://bogatyr.com/images/coin-master-32-android-mod-hack-apk-download_GM406889139.pdf
    • http://bogatyr.com/images/how-to-get-2021-robux-for-free_GM431946152.pdf
    • http://bogatyr.com/images/coin-master-free-spins-cheat_GM406889139.pdf
    • http://bogatyr.com/images/infinite-robux_GM431946152.pdf
    • http://bogatyr.com/images/coin-master-hack-ios-without-verification_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b6f.bin
52ac2af074f9e83a0cd851461234c188385ea5504bd39f0c8ba672f72a20d199
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B6F 25204 bytes
font_01_sfnt_off000083dd.bin
489221dfcb925ba69d0ba840bced02970ab19491774c28c5754cc19987365276
pdf-font-stream PDF embedded font (sfnt) at offset 0x83DD 18716 bytes