Malicious PDF — malware analysis report

Static analysis result for SHA-256 6caa04b11996efd4…

MALICIOUS

PDF

34.3 KB Created: 2021-06-18 01:59:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 78ee9a204c81baf372709e445fe16298 SHA-1: 5bb859ca38d9540d8611c755c51603b1ed80b790 SHA-256: 6caa04b11996efd406280d009a427bb4dba01c10db74eecfd34486960e3b65e9
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs that lead to sites offering game hacks and cheats, such as 'roblox-robot-animation-pack-free-game-hack'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users searching for cheats. The ML classifier also flagged this PDF as malicious with high confidence.

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/roblox-robot-animation-pack-free-game-hack
    • http://library.ft.upnvj.ac.id/repository/coin-master-hack-online-generator_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/coin-master-free-link-blogspot_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/how-to-get-free-robux-codes_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/links-to-free-spins-on-coin-master_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/coin-master-free-spins-today-daily-links_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/coin-master-free-coins-generator_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/free-minecraft-maps_GM479516143.pdf
    • http://library.ft.upnvj.ac.id/repository/roblox-mad-city-money-cheat-codes_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdf
    • http://library.ft.upnvj.ac.id/repository/unfair-roblox-cheats_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/best-tricks-co-robux_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/free-robux-generator-no-survey_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/coin-master-free-coins-and-spins_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/robux-boost_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/coin-master-spin-link-today_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/free-spins-from-coin-master_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/free-roblox-accounts-that-work_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ebf.bin
be8973351d9155a9e72abcfe14bfccb9f2d26b1370d0c4998dc77795d7f0d09a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBF 22388 bytes
font_01_sfnt_off0000608c.bin
07f1f57090e8406eb4435fd016a035b7ec0687564f594a45b3cd66c1b0d1feed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x608C 19272 bytes

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