Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ef82958a25ea60…

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 05:43:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 379801719c29094161312a3a19a0b1ba SHA-1: 7c9e73ed610f128a6c7b18262edb7ee621b57ef0 SHA-256: 01ef82958a25ea60ea1a1d0d4d64c5fc8dddd25b815afee29cafa457f32fcf76
102 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which point to other PDF files, suggesting a link farm or SEO manipulation tactic. One prominent link directs to a page about 'free Roebucks on Roblox', a common lure for phishing or scam attempts. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/431946152/how-to-get-free-roebucks-on-roblox-game-hack
    • https://www.jjautomation.in/uploaded_files/userfiles/files/minecraft-hack-mod_GM479516143.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/free-coins-and-spins-coin-master-2021_GM406889139.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/coin-master-hack-tool-for-pc_GM406889139.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/how-to-get-free-snacks-in-coin-master_GM406889139.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/how-do-you-get-free-robux-2021_GM431946152.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/is-coin-master-free_GM406889139.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/how-to-free-robux_GM431946152.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/free-account-roblox-2021_GM431946152.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/free-robux-for-kids_GM431946152.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/minecraft-games-to-play-for-free_GM479516143.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/roblox-com-free-robux_GM431946152.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/download-hack-coin-master-apk_GM406889139.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/coin-master-hacks-free-spins_GM406889139.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/how-do-you-get-free-roblox_GM431946152.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/coin-master-free-spins-haktuts_GM406889139.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/what-games-give-you-robux_GM431946152.pdf
    • https://www.jjautomation.in/uploaded_files/userfiles/files/coin-master-village-4_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053b1.bin
c5ae5b92bfdee2fbc293ec43fcbd5a4a31b95b081cc05e382f480ec7ae20406d
pdf-font-stream PDF embedded font (sfnt) at offset 0x53B1 24092 bytes
font_01_sfnt_off00008ac1.bin
b7643ab87c6ede69648f322cd81a197be2475f7126f117e622ee98ccb7431d7c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC1 18524 bytes