Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ca6881dcfb451f…

MALICIOUS

PDF

35.0 KB Created: 2021-07-01 01:37:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 65ba32c5b011dc45e5cf550fa3a573cc SHA-1: 655ddc20614e837c2b96d6fca0a0174ec8fde09a SHA-256: c3ca6881dcfb451f8b3d1b522726948433f7d82123bb1be394b08a6b13e9bf5e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links disguised as content related to game cheats and hacks, a common lure for phishing or malware distribution. The heuristic PDF_SEO_LINK_FARM indicates a large number of external links, and the ML_NYX_PDF_MALICIOUS flag confirms a high probability of malicious intent. The presence of a download button lure further supports the malicious workflow.

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/how-to-get-free-tix-in-roblox-high-school-game-hack
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-log-out-of-coin-master_GM406889139.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/clothing-advertisement-roblox-template-free_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/roblox-hacked-version-download_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/code-kingdoms-roblox-all-free_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-robux-reddit_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/daily-free-spins-on-coin-master_GM406889139.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-robux-com-roblox_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-get-free-things-on-roblox-without-robux_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/roblox-ipad-free-robux_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-robux-pastebin_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/roblox-hack-ga_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/coin-master-free-spins-and-cards_GM406889139.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/robux-gift-card-for-free_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/hackear-coin-master-sin-verificacion_GM406889139.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/roblox-how-to-get-any-gamepass-for-free_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/roblox-army-free-robux_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-roblox-pats-girl_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031e3.bin
4cfaa873e0923d880c6ecbd15a3451095fd252fbc737292a8f0456b807c470a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31E3 22296 bytes
font_01_sfnt_off0000633e.bin
08afc57489b843893400f1529004d0e95801fde6441652eab25df2380b858c9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x633E 19204 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.