Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d57e37c67e7ce7…

MALICIOUS

PDF

34.2 KB Created: 2021-06-26 06:30:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 49d99f0870a936240b88a3d5515d73b8 SHA-1: f67c6e86924c7695f7386df61701926d2fbe027d SHA-256: 97d57e37c67e7ce7a69ff7bc9f4434bd45c149885f21311461964c60914c82aa
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to websites offering cheats and hacks for games like Roblox and Minecraft. The heuristic PDF_SEO_LINK_FARM indicates a mass external PDF link farm, suggesting a coordinated effort to distribute malicious content. The ML_NYX_PDF_MALICIOUS classifier also flagged this PDF with high confidence, indicating a strong likelihood of malicious intent. The document likely serves as a lure to download further malware or engage in phishing activities.

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.co/app/431946152/free-group-in-roblox-game-hack
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/bank-tycoon-roblox-cheat_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-hack_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/long-pastel-hair-roblox-free-to-purchase_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-24-7-minecraft-server_GM479516143.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/how-to-get-robux-without-human-verification_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/anak-roblox-hacking-tool_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-free-spins-for-today_GM406889139.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/dll-injector-roblox-phantom-forces-hack_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/promo-codes-to-get-free-robux_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/minecraft-pocket-edition-free_GM479516143.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/how-to-get-free-coins-in-mcpe-master_GM406889139.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/roblox-cheat-engine-phantom-forces_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/how-you-get-free-robux_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-roblox-followers-generator_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/como-hackear-el-juego-coin-master_GM406889139.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/haktuts-coin-master-free-spins_GM406889139.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/can-i-get-robux-for-free_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/youtube-how-to-get-free-robux_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-robux-easy_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-latest-version-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000301e.bin
c5b6f01ae903e83e9f895fdd6fc407c7d13aeb82ac20abb8ba6d98b2c04767a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x301E 21932 bytes
font_01_sfnt_off000060b8.bin
b548e6d5b63894d370bedcd71f18b22cc56cb30df969150012d9087728e1f2b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B8 18968 bytes

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