Malicious PDF — malware analysis report

Static analysis result for SHA-256 f54b85e95501e082…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 22:13:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0fbd278097b612f76965b0566cdac4c2 SHA-1: e25f2f07ce6e0adc2e53373dbd91ffbdba39304d SHA-256: f54b85e95501e082a62f51c3c5287eb59c44e10418fdc853e46cd7b2842f8e8b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which point to external resources related to game hacks and free in-game currency, suggesting a lure for users to download potentially malicious files. The ML classifier strongly flagged this PDF as malicious, and the presence of a 'download button' heuristic further supports a malicious intent. The document's content and structure are consistent with a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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.tw/app/431946152/roblox-game-free-download-game-hack
    • http://lib.fisipumt.ac.id/repository/static-moonactive-net-link_GM406889139.pdf
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdf
    • http://lib.fisipumt.ac.id//repository/lastrick-com-coin-master-hack_GM406889139.pdf
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdf
    • http://lib.fisipumt.ac.id/repository/free-hair-roblox-not-moel_GM431946152.pdf
    • http://lib.fisipumt.ac.id/repository/coin-master-heaven-free-spins_GM406889139.pdf
    • http://lib.fisipumt.ac.id/repository/roblox-games-to-play-for-free_GM431946152.pdf
    • http://lib.fisipumt.ac.id//repository/coin-master-card-link-free_GM406889139.pdf
    • http://lib.fisipumt.ac.id//repository/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdf
    • http://lib.fisipumt.ac.id/repository/free-robux-no-offers-2021_GM431946152.pdf
    • http://lib.fisipumt.ac.id//repository/free-coin-master-spin-daily-link_GM406889139.pdf
    • http://lib.fisipumt.ac.id//repository/can-you-actually-get-free-robux_GM431946152.pdf
    • http://lib.fisipumt.ac.id//repository/free-robux-videos_GM431946152.pdf
    • http://lib.fisipumt.ac.id//repository/pokemon-go-free-ticket_GM1094591345.pdf
    • http://lib.fisipumt.ac.id/repository/how-get-free-robux-hack_GM431946152.pdf
    • http://lib.fisipumt.ac.id/repository/john-doe-roblox-hacker_GM431946152.pdf
    • http://lib.fisipumt.ac.id//repository/can-you-get-minecraft-windows-10-for-free_GM479516143.pdf
    • http://lib.fisipumt.ac.id/repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdf
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdf
    • http://lib.fisipumt.ac.id/repository/free-roblox-usernames-and-passwords_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063c9.bin
a2f27b52acabb0167f9a542fed976ebd18b11ecd499185880ec5860d5673245b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C9 19416 bytes

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