Malicious PDF — malware analysis report

Static analysis result for SHA-256 b782a2a33c2bed9f…

MALICIOUS

PDF

34.2 KB Created: 2021-06-17 22:24:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cc8a6bc95bd873ba292c8e139ad00277 SHA-1: ad2fa045baef4ed1801e5c840dd7125c55a7420c SHA-256: b782a2a33c2bed9fbb9b1316caaadd5f19436d45bb3e11afdd5870043e4ab521
102 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are structured as SEO link farms. These links promote game-related content such as 'Roblox Animation Free Download' and 'Coin Master Free Spins', suggesting a lure for users seeking cheats or in-game currency. 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 0.9980

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-animation-free-download-game-hack
    • http://caraless.com/images/robux-no-human-verification-2021_GM431946152.pdf
    • http://caraless.com/images/coin-master-links-for-free-spins_GM406889139.pdf
    • http://caraless.com/images/spins-gratis-coin-master-hoy_GM406889139.pdf
    • http://caraless.com/images/free-cracked-minecraft-server-hosting_GM479516143.pdf
    • http://caraless.com/images/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdf
    • http://caraless.com/images/free-dominus-roblox_GM431946152.pdf
    • http://caraless.com/images/roblox-models-hack-your-account_GM431946152.pdf
    • http://caraless.com/images/my-robux_GM431946152.pdf
    • http://caraless.com/images/how-to-get-free-spins-grom-coin-master_GM406889139.pdf
    • http://caraless.com/images/free-spins-coin-master-daily_GM406889139.pdf
    • http://caraless.com/images/new-map-roblox-hack_GM431946152.pdf
    • http://caraless.com/images/coin-master-free-coins-generator_GM406889139.pdf
    • http://caraless.com/images/today-free-spin-coin-master_GM406889139.pdf
    • http://caraless.com/images/free-robux-instantly_GM431946152.pdf
    • http://caraless.com/images/roblox-free-gamepass-scriopt_GM431946152.pdf
    • http://caraless.com/images/get-free-cards-in-coin-master_GM406889139.pdf
    • http://caraless.com/images/roblox-parkour-point-hack-scriot_GM431946152.pdf
    • http://caraless.com/images/free-robux-gift-card-generator_GM431946152.pdf
    • http://caraless.com/images/prison-life-roblox-hack-download-20212021_GM431946152.pdf
    • http://caraless.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f24.bin
9618f39a844355be47dd8b8c34b83ba3c793e0185f81268309b9da29759909cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F24 21992 bytes
font_01_sfnt_off00005f98.bin
99328d569e093305edd76257aa0893acb3e6fde325ffd62633d7faae4e162160
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F98 19452 bytes