Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c7c4f7059b0daef…

MALICIOUS

PDF

35.4 KB Created: 2021-06-30 13:04:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 019d30aeb55b4f9166efd7a8411e2c5a SHA-1: 4cb5a4383459d40bb41f5c109335020a0d1ccd06 SHA-256: 3c7c4f7059b0daef16ce5285ba0fedab917dabeb4b72e3faea33a26d0ddad355
102 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are SEO-optimized and point to game-related cheat downloads. The document body also contains a direct URL to a potential download, suggesting a lure for users seeking game exploits or cheats. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to trick users into downloading potentially harmful files.

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/generator-robux-free-2021-sans-verification-game-hack
    • https://doingimc.com/image/data/files/coin-master-hack-2021_GM406889139.pdf
    • https://doingimc.com/image/data/files/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdf
    • https://doingimc.com/image/data/files/free-robux-codes_GM431946152.pdf
    • https://doingimc.com/image/data/files/coin-master-free-coins-link-2021_GM406889139.pdf
    • https://doingimc.com/image/data/files/pubg-600-uc-in-indian-rupees_GM1330123889.pdf
    • https://doingimc.com/image/data/files/free-roblox-hair-to-wear_GM431946152.pdf
    • https://doingimc.com/image/data/files/free-robux-that-actually-works-2021_GM431946152.pdf
    • https://doingimc.com/image/data/files/free-robux-live_GM431946152.pdf
    • https://doingimc.com/image/data/files/spin-rewards-coin-master_GM406889139.pdf
    • https://doingimc.com/image/data/files/my-account-has-been-hacked-on-roblox_GM431946152.pdf
    • https://doingimc.com/image/data/files/easy-roblox-today_GM431946152.pdf
    • https://doingimc.com/image/data/files/best-free-minecraft-hacked-client_GM479516143.pdf
    • https://doingimc.com/image/data/files/how-to-hack-roblox-flood-escape-2_GM431946152.pdf
    • https://doingimc.com/image/data/files/how-to-get-free-roblox_GM431946152.pdf
    • https://doingimc.com/image/data/files/codes-to-get-free-robux_GM431946152.pdf
    • https://doingimc.com/image/data/files/do-you-get-minecraft-windows-10-for-free_GM479516143.pdf
    • https://doingimc.com/image/data/files/how-to-get-free-robux-easy-no-download_GM431946152.pdf
    • https://doingimc.com/image/data/files/coin-master-free-400-spin-link_GM406889139.pdf
    • https://doingimc.com/image/data/files/coin-master-vip-hack_GM406889139.pdf
    • https://doingimc.com/image/data/files/collect-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_off000030a4.bin
a20e973ad1286c2b397d89fe6545578246d3c76349d292e9f784bc0aac18e539
pdf-font-stream PDF embedded font (sfnt) at offset 0x30A4 22796 bytes
font_01_sfnt_off000063ed.bin
2724546e99de1962233a2dace9a157786584e9c3fd0127443765cc01d877fa99
pdf-font-stream PDF embedded font (sfnt) at offset 0x63ED 19476 bytes