Malicious PDF — malware analysis report

Static analysis result for SHA-256 77711e63f304b03d…

MALICIOUS

PDF

35.2 KB Created: 2021-06-27 02:32:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0080831b5ad7106cba4945ecb109be8e SHA-1: adc678b2d5f91f59dc14118c812e454511b2f931 SHA-256: 77711e63f304b03dcfd49502be935bb8d7b04708f5ba28544c70aead9a43285d
102 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, many of which are related to game cheats and hacks, suggesting a lure for users to download potentially malicious files. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the ML classifier strongly flagged this PDF as malicious. The presence of a 'Download Now' type phrase further supports the malicious intent.

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/cheat-roblox-power-simulator-game-hack
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/coin-master-apk-hacked-3526_GM406889139.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/robux-hack-no-human-verification_GM431946152.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/free-robux-images_GM431946152.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/how-to-hack-people-on-roblox-2021_GM431946152.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/how-to-hack-people-in-roblox_GM431946152.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today_GM406889139.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/juego-hackeado-de-coin-master_GM406889139.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/minecraft-hacks-18-9_GM479516143.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/can-you-give-me-free-robux_GM431946152.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/roblox-free-exploits_GM431946152.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/coin-master-free-gold_GM406889139.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/get-free-robux-generator_GM431946152.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-email_GM431946152.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-that-work_GM406889139.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/free-executors-for-roblox_GM431946152.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/roblox-phantom-forecs-hack-scripts_GM431946152.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/roblox-ro-ghoul-how-to-get-a-different-for-free_GM431946152.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/coin-master-free-spin-codes_GM406889139.pdf
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/free-robux-no-human-verificarion_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003161.bin
74b121bd49dc2c76245d45ef4dc65b368add2f252e37e3654f5a31ea88ca7555		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3161 22460 bytes
font_01_sfnt_off00006332.bin
503247166aee175cec46361793a750c9b8a01dbdf7a81456fc27877e9dd00b83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6332 19596 bytes

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