Malicious PDF — malware analysis report

Static analysis result for SHA-256 560b0920b48ed1c7…

MALICIOUS

PDF

32.3 KB Created: 2021-06-30 04:32:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ecb981af55e46eedec83088fb691b36b SHA-1: 2d8f7a689966a8f40a520f7c951301552ccfd997 SHA-256: 560b0920b48ed1c76732c89b8266c36af4123c150585b2f3249a0cd5900fe8b1
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are related to obtaining free in-game currency or hacks for popular games. 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 sites. The document body and extracted URLs suggest a lure for users seeking cheats or free items, which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-intant-robux-genertaor-no-survey-game-hack
    • http://niceviaapia.com.br/images/ckfinder/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/pokemon-go-free-0-iv_GM1094591345.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/roblox-get-free-robux-no-human-verification_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/coin-master-download_GM406889139.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/roblox-fly-hack-no-download_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/roblox-noob-shirt-free-shipping_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/how-to-get-free-robux-no-hack-april-2021_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/free-robux-codes-2021-for-phone_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/hacks-to-get-robux-roblox_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/how-to-hack-robux-on-ipad-2021_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/spin-and-coin_GM406889139.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/minecraft-build-hacks_GM479516143.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/how-to-get-hacks-on-roblox_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/lazyblox-com-free-robux_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/how-to-get-free-roblox-money-on-computer_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/how-to-get-roblox-premium-for-free_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/top-ten-roblox-hacks_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/cheat-engine-roblox-jump_GM431946152.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/coin-master-free-spins-daily_GM406889139.pdf
    • http://niceviaapia.com.br/images/ckfinder/files/all-minecraft-handbooks_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002a41.bin
202e142284a2075bd2e0d79cbed8d4c0ecfe268c217356a7e54a992811b4231e
pdf-font-stream PDF embedded font (sfnt) at offset 0x2A41 21392 bytes
font_01_sfnt_off00005920.bin
899055f36f1441a1f1057926ac64fe80ae2c04ec1c00bf6a8103050feea7951d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5920 19112 bytes