Malicious PDF — malware analysis report

Static analysis result for SHA-256 16b4f5dfb4bd7669…

MALICIOUS

PDF

35.5 KB Created: 2021-07-05 23:02:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4517480ab7f7deaec0575ab503900a5a SHA-1: e5b70c9a3f035ecc7d9a42c8db1acdd81e0dd074 SHA-256: 16b4f5dfb4bd766928f46a97350df1212e33ac01895fce045e62c14e39982d84
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that advertises hacks for popular games, suggesting a phishing or malware distribution lure. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, many with numeric slugs, pointing to a link farm designed to attract users searching for game cheats. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/406889139/coin-master-hack-2021-without-verification-game-hack
    • http://library.stieyapan.ac.id/repository/coin-master-game-free-play-online_GM406889139.pdf
    • http://library.stieyapan.ac.id//repository/free-coins-coin-master-ios_GM406889139.pdf
    • http://library.stieyapan.ac.id/repository/free-robux-com-roblox_GM431946152.pdf
    • http://library.stieyapan.ac.id/repository/roblox-hack-robux-2021-pc_GM431946152.pdf
    • http://library.stieyapan.ac.id//repository/coin-master-attack-madness-hack_GM406889139.pdf
    • http://library.stieyapan.ac.id/repository/how-to-get-free-robux-on-ipad_GM431946152.pdf
    • http://library.stieyapan.ac.id/repository/coin-master-invite-friends-free-spins_GM406889139.pdf
    • http://library.stieyapan.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdf
    • http://library.stieyapan.ac.id/repository/safe-hack-for-coin-master-android_GM406889139.pdf
    • http://library.stieyapan.ac.id//repository/how-to-get-free-roebucks-without-verification_GM431946152.pdf
    • http://library.stieyapan.ac.id//repository/how-to-get-free-robux-inspect_GM431946152.pdf
    • http://library.stieyapan.ac.id/repository/coin-master-in-app-purchase-hack_GM406889139.pdf
    • http://library.stieyapan.ac.id//repository/coin-master-hack-2021-without-verification_GM406889139.pdf
    • http://library.stieyapan.ac.id//repository/free-minecraft-svg-cutting-files_GM479516143.pdf
    • http://library.stieyapan.ac.id/repository/free-minecraft-addons_GM479516143.pdf
    • http://library.stieyapan.ac.id/repository/best-hacks-roblox_GM431946152.pdf
    • http://library.stieyapan.ac.id/repository/free-robux-easy-and-fast_GM431946152.pdf
    • http://library.stieyapan.ac.id//repository/coin-master-gifts_GM406889139.pdf
    • http://library.stieyapan.ac.id//repository/minecraft-online-free-no-download_GM479516143.pdf
    • http://library.stieyapan.ac.id//repository/coin-master-hack-tool-without-verification_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033f6.bin
31efe678b3b018f5d1e04561bb568c404ec44a039269e45c187cc237a8eb5cf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33F6 22336 bytes
font_01_sfnt_off000065aa.bin
52d7970975dbb598a786e40d700a78de5bb38af7462f02b60e72eba81c32d00d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65AA 19044 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.