Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cf2518f6bcacbfe…

MALICIOUS

PDF

36.8 KB Created: 2021-07-07 15:17:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fa1b5880846c282eabe24a58e16d8774 SHA-1: bc7af647155d78e42a5d4dbc57d34981999abd0b SHA-256: 4cf2518f6bcacbfeb7bf7ecdb8248fc37da31ba20926171d92dc74dabee30e78
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, many of which are structured as SEO-optimized URLs pointing to game-related 'hack' or 'cheat' content. The ML classifier strongly indicated maliciousness, and the presence of a 'download button' heuristic suggests a user-interaction lure. The primary goal appears to be directing users to external sites that likely host malware or phishing content.

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-fun-hack-online-game-hack
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/how-do-i-get-free-coins-in-coin-master_GM406889139.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/best-roblox-hacks_GM431946152.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/free-roblox-1b-roblox-accounts_GM431946152.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free_GM431946152.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/hacked-roblox-accounts-list_GM431946152.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/free-spins-from-coin-master_GM406889139.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/robux-no-human-verification-free_GM431946152.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-access-online-generator_GM406889139.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/how-to-get-robux-on-phone_GM431946152.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/master-free-spin-and-coin-link_GM406889139.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/free-coin-master-spins_GM406889139.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/free-robux-on-ipad_GM431946152.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/best-tricks-co-robux_GM431946152.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/coin-master-34-4-free-download_GM406889139.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/coin-master-hack-using-lucky-patcher_GM406889139.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/como-hack-coin-master_GM406889139.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000390f.bin
8b13a3007af4fe6c16c62bef5c11fd1b11ec832fbd43eadaa419982499c77514		 pdf-font-stream PDF embedded font (sfnt) at offset 0x390F 23172 bytes
font_01_sfnt_off00006d16.bin
82f50ecb043713adffcb6edd5235900cf77d2533baeaa72d35189a33f5377fa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D16 18384 bytes

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