Malicious PDF — malware analysis report

Static analysis result for SHA-256 021216fe10769315…

MALICIOUS

PDF

34.2 KB Created: 2021-06-29 21:00:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ed26d78901eefafec40976f502ac005c SHA-1: 92f2d83b170a8d6141d5f41584dec49e9dcc59fa SHA-256: 021216fe107693152590d1bf6bb9cd49abec366d38d4f8f3ca43d047070b1d25
122 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to IP addresses, that are disguised as resources for game cheats and hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a link farm designed to host malicious content or redirect users to phishing sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/roblox-piano-hack-no-download-game-hack
    • http://118.98.227.172/opac/repository/how-to-get-robux-fast-no-hack_GM431946152.pdf
    • http://118.98.227.172/opac/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • http://118.98.227.172/opac/repository/minecraft-free-install_GM479516143.pdf
    • http://118.98.227.172/opac/repository/roblox-robux-hack-program_GM431946152.pdf
    • http://118.98.227.172/opac/repository/free-roblox-clothes-for-your-avatar_GM431946152.pdf
    • http://118.98.227.172/opac/repository/roblox-play-now-for-free-as-guest_GM431946152.pdf
    • http://118.98.227.172/opac/repository/roblox-flood-escape-2-hack_GM431946152.pdf
    • http://118.98.227.172/opac/repository/free-robux-hack-no-verification_GM431946152.pdf
    • http://118.98.227.172/opac/repository/roblox-nike-t-shirt-free_GM431946152.pdf
    • http://118.98.227.172/opac/repository/coin-master-free-spins-cheat_GM406889139.pdf
    • http://118.98.227.172/opac/repository/free-gift-card-codes-roblox-2021_GM431946152.pdf
    • http://118.98.227.172/opac/repository/como-tener-hacks-de-armas-en-roblox_GM431946152.pdf
    • http://118.98.227.172/opac/repository/how-to-get-free-robux-app_GM431946152.pdf
    • http://118.98.227.172/opac/repository/coin-master-facebook_GM406889139.pdf
    • http://118.98.227.172/opac/repository/coin-master-card-collection-link_GM406889139.pdf
    • http://118.98.227.172/opac/repository/free-robux-giveaway-live_GM431946152.pdf
    • http://118.98.227.172/opac/repository/coin-master-free-2021-spin-link_GM406889139.pdf
    • http://118.98.227.172/opac/repository/how-to-hack-roblox-hack_GM431946152.pdf
    • http://118.98.227.172/opac/repository/free-account-that-have-robux-that-are-100-real_GM431946152.pdf
    • http://118.98.227.172/opac/repository/free-minecraft-mods-for-pc_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d44.bin
9d71c9526a0c6118bd7c3c15531e0c27267f755a581febcefff95679b242270a
pdf-font-stream PDF embedded font (sfnt) at offset 0x2D44 22496 bytes
font_01_sfnt_off00005f40.bin
127e9e549ac8f60b91b5a3fc8106d81f1be6fd27a791edba2092a0745b30a5b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F40 19436 bytes