Malicious PDF — malware analysis report

Static analysis result for SHA-256 c080ddefd2967706…

MALICIOUS

PDF

34.9 KB Created: 2021-07-01 01:55:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fa2c1ff4e1229b8506623b837d29fff5 SHA-1: baf2b235c38194b107aa74d669b3405f47102ae2 SHA-256: c080ddefd29677061bba471605244d04aed871407ce6ffcee99c8d8733f491e1
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a 'link farm' structure, heavily suggesting a phishing or malware distribution attempt. The document body and extracted URLs promote 'free Robux' and game-related cheats, indicating a lure for potentially malicious downloads or credential harvesting. The ML classifier also strongly flagged this PDF as malicious.

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/free-robux-hack-no-fake-game-hack
    • http://www.peterbarsony.com/userfiles/files/free-roblox-accounts-with-robux_GM431946152.pdf
    • http://www.peterbarsony.com/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • http://www.peterbarsony.com/userfiles/files/roblox-hacks-for-mac_GM431946152.pdf
    • http://www.peterbarsony.com/userfiles/files/free-private-minecraft-server_GM479516143.pdf
    • http://www.peterbarsony.com/userfiles/files/will-minecraft-dungeons-be-free_GM479516143.pdf
    • http://www.peterbarsony.com/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdf
    • http://www.peterbarsony.com/userfiles/files/free-robux-without-verification-or-survey_GM431946152.pdf
    • http://www.peterbarsony.com/userfiles/files/roblox-mod-apk-hack_GM431946152.pdf
    • http://www.peterbarsony.com/userfiles/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
    • http://www.peterbarsony.com/userfiles/files/how-to-duplicate-coin-master-spin-hack_GM406889139.pdf
    • http://www.peterbarsony.com/userfiles/files/get-free-robux-com_GM431946152.pdf
    • http://www.peterbarsony.com/userfiles/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdf
    • http://www.peterbarsony.com/userfiles/files/get-free-spins-in-coin-master_GM406889139.pdf
    • http://www.peterbarsony.com/userfiles/files/roblox-wall-hacking_GM431946152.pdf
    • http://www.peterbarsony.com/userfiles/files/earn-free-robux-9nline_GM431946152.pdf
    • http://www.peterbarsony.com/userfiles/files/free-spins-coin-master-links_GM406889139.pdf
    • http://www.peterbarsony.com/userfiles/files/roblox-game-hack-commands_GM431946152.pdf
    • http://www.peterbarsony.com/userfiles/files/free-ways-to-get-robux_GM431946152.pdf
    • http://www.peterbarsony.com/userfiles/files/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdf
    • http://www.peterbarsony.com/userfiles/files/easy-ways-to-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030cb.bin
6decf48d9b78500c839535adc5a1c2d80edb1c97793137f33380fb2de4490187
pdf-font-stream PDF embedded font (sfnt) at offset 0x30CB 22768 bytes
font_01_sfnt_off00006408.bin
58fe1aaf70c4074259fb90a1e4d5e482c7d88eb05d123b8a53809abc909640bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6408 18884 bytes