Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a223006486bb0d0…

MALICIOUS

PDF

36.0 KB Created: 2021-07-06 08:14:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c41341981f21d69fec013e98437002b8 SHA-1: c87edf00819a8a8cdbd6bd32d6f7289718ded730 SHA-256: 9a223006486bb0d07fb5dff5fbe6d5e01f51fae4946dba07fd66d825359c747d
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are SEO-optimized to appear as legitimate resources for game cheats and hacks. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or downloads. The document body itself contains URLs and text related to game hacks, reinforcing the lure.

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-xyz-download-free-game-hack
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/roblox-hack-scripts-pastebin_GM431946152.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/get-free-admin-commands-roblox_GM431946152.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/robux-hack-generator_GM431946152.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/my-roblox-account-was-hacked_GM431946152.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/free-spin-and-win-coin-master_GM406889139.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/easy-robux-hack_GM431946152.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-personal-info_GM431946152.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/a-game-that-someone-cant-hack-in-roblox_GM431946152.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/coin-master-hack-xyz_GM406889139.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/op-rewards-robux_GM431946152.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/codes-to-get-free-robux_GM431946152.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/robux-hack-apk-download-without-generator_GM431946152.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-ios_GM406889139.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/roblox-red-hair-free_GM431946152.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/coin-master-free-cards-link_GM406889139.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • http://elearning.man3boyolali.sch.id/__statics/gudangsoal/files/free-robux-with-no-verification-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003296.bin
c9eabc0eec7418a810bf57cb709a99e7cc0476a772df1fa808a9ca89474fe368		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3296 23332 bytes
font_01_sfnt_off00006744.bin
40a95bac7efeedd056b1a9645696afbc74576a07b4b2fccba56c2b98aaafc7f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6744 19236 bytes

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