Malicious PDF — malware analysis report

Static analysis result for SHA-256 43b24199aa999861…

MALICIOUS

PDF

36.0 KB Created: 2021-07-03 19:22:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b9c2f7d093e8587752dc7176aae0fe6e SHA-1: 6e71787b4145921b3f831a085b58465f258ad9a3 SHA-256: 43b24199aa9998617cb364ff1e788223861778ae4c6a60bf4f63746dd79735d4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to external websites, many of which are related to game hacks and cheats. The presence of a PDF URI heuristic and the ML classifier's high confidence score indicate malicious intent. The document likely serves as a lure to direct users to potentially malicious sites that could host further exploits or malware.

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-without-verification-game-hack
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/bux-life-free-robux_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/roblox-bloxburg-money-hack-2021_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/cheat-roblox-roghoul-en-francais_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/hacks-on-how-to-get-free-robux_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/free-roblox-accounts-2021-with-robux_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/blue-wistful-wink-roblox-for-free_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/synapse-roblox-free-download_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/roblox-fnaf-free_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/como-hackear-roblox-para-tener-robux-2021_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-website_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/roblox-hack-mod-pc_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/roblox-xbox-1-cheats_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/hack-devil-fruit-one-piece-roblox_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/promo-codes-for-free-robux_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/play-minecraft-pocket-edition-for-free_GM479516143.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/free-10-codes-for-roblox-no-human-verification_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/free-robux-script-hack_GM431946152.pdf
    • http://elearning.man1kuburaya.sch.id/__statics/gudangsoal/files/how-to-make-vip-server-for-free-in-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033c5.bin
b9eded0fff20bf7168d774541a8a6fc013344418da45495d19eb6fc97cba9fe2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33C5 23420 bytes
font_01_sfnt_off000068e6.bin
e70c731676407bb7de6fff885d091169cd44aed03cdfcdb15904209bbd23907c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E6 18640 bytes

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