Malicious PDF — malware analysis report

Static analysis result for SHA-256 7787302f67d0b55f…

MALICIOUS

PDF

42.7 KB Created: 2021-05-15 12:50:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 38337f6612013f91bf4163111e6d276a SHA-1: d4d8b7ea9a3038b736aa7c8d47a9116d72b18310 SHA-256: 7787302f67d0b55fdfa9209ff9f93ca6c8f44e6bc1e40eed8d4bf78570f9504a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a link farm, strongly suggesting it is designed to redirect users to external sites. The content, including references to game hacks and free in-game currency, indicates a social engineering lure. The ML classifier also flagged this PDF as malicious with high confidence.

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/406889139/8bp-hack-coin-master-game-hack
    • http://www.herricht.at/images/free-spins-coin-master-app_GM406889139.pdf
    • http://www.herricht.at/images/coin-master-date-and-time-hack_GM406889139.pdf
    • http://www.herricht.at/images/free-robux-com-no-verification_GM431946152.pdf
    • http://www.herricht.at/images/free-spin-link-for-coin-master-haktuts_GM406889139.pdf
    • http://www.herricht.at/images/dominus-roblox-free_GM431946152.pdf
    • http://www.herricht.at/images/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://www.herricht.at/images/free-spin-coin-master-instagram_GM406889139.pdf
    • http://www.herricht.at/images/earn-free-robux_GM431946152.pdf
    • http://www.herricht.at/images/claim-free-robux-button_GM431946152.pdf
    • http://www.herricht.at/images/classic-minecraft-net-hacks_GM479516143.pdf
    • http://www.herricht.at/images/free-coin-master-coins-and-spins_GM406889139.pdf
    • http://www.herricht.at/images/can-you-download-minecraft-for-free_GM479516143.pdf
    • http://www.herricht.at/images/robux-generator-no-verification-2021_GM431946152.pdf
    • http://www.herricht.at/images/minecraft-story-mode-free-download_GM479516143.pdf
    • http://www.herricht.at/images/free-robux-that-actually-works-2021_GM431946152.pdf
    • http://www.herricht.at/images/free-robux-without-human-verification_GM431946152.pdf
    • http://www.herricht.at/images/robux-fun-hack_GM431946152.pdf
    • http://www.herricht.at/images/coin-master-daily-free-spins-link_GM406889139.pdf
    • http://www.herricht.at/images/free-cheat-codes-for-coin-master_GM406889139.pdf
    • http://www.herricht.at/images/how-to-get-free-robux-easy_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b79.bin
ccef01b55954e1116a2ed3a19d6ec9556f7714ed5aff2a51066c812c46c32d0d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B79 24964 bytes
font_01_sfnt_off00008461.bin
40ee1887dd31b0862b85694c1b9e7d14e4b08e6d7c2645c8853cb2866e35e1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8461 18260 bytes

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