Malicious PDF — malware analysis report

Static analysis result for SHA-256 a13eed32a0d34ddc…

MALICIOUS

PDF

34.5 KB Created: 2021-06-18 15:17:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7db5f870450a1fb97b3c571c7d90ccb9 SHA-1: 637076578fe969174c1a85ce29b881292bed4c9e SHA-256: a13eed32a0d34ddcbc3b2ceb93018a36ced5ec4c43bc089763438b03a36239fa
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 SEO-optimized to appear as guides for obtaining free in-game currency for popular games. The primary URL, http://netcdn.co/app/431946152/get-free-robux-on-roblox-no-human-verification-game-hack, suggests a direct download or exploit attempt. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is designed to lead users to malicious content.

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/get-free-robux-on-roblox-no-human-verification-game-hack
    • https://dirigentigiustizia.it/images/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdf
    • https://dirigentigiustizia.it/images/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • https://dirigentigiustizia.it/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
    • https://dirigentigiustizia.it/images/booga-booga-hack-roblox-download_GM431946152.pdf
    • https://dirigentigiustizia.it/images/sentinel-exploit-roblox-free_GM431946152.pdf
    • https://dirigentigiustizia.it/images/how-to-get-free-robux-glitch-2021_GM431946152.pdf
    • https://dirigentigiustizia.it/images/minecraft-marketplace-free_GM479516143.pdf
    • https://dirigentigiustizia.it/images/2021-free-spins-coin-master_GM406889139.pdf
    • https://dirigentigiustizia.it/images/how-to-hack-and-get-free-robux_GM431946152.pdf
    • https://dirigentigiustizia.it/images/coin-master-hack-download_GM406889139.pdf
    • https://dirigentigiustizia.it/images/guide--coin-master-free-tips_GM406889139.pdf
    • https://dirigentigiustizia.it/images/free-robux-codes-2021_GM431946152.pdf
    • https://dirigentigiustizia.it/images/roblox-admin-hack_GM431946152.pdf
    • https://dirigentigiustizia.it/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdf
    • https://dirigentigiustizia.it/images/coin-master-free-spins-and-coins_GM406889139.pdf
    • https://dirigentigiustizia.it/images/free-1-hundred-robux_GM431946152.pdf
    • https://dirigentigiustizia.it/images/roblox-promo-codes-free-robux_GM431946152.pdf
    • https://dirigentigiustizia.it/images/can-you-get-minecraft-for-free_GM479516143.pdf
    • https://dirigentigiustizia.it/images/roblox-free-robux-no-verification_GM431946152.pdf
    • https://dirigentigiustizia.it/images/free-minecraft-account-and-password_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fba.bin
cbddeba76503d751950a9471a5d066ed5e24dc05815aa109f58d41b6fbe94e95
pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBA 22224 bytes
font_01_sfnt_off0000613b.bin
0d3cd2b280083d8f14bddc384e9ddc4cbf191c64605fb814b76b21efcffe160d
pdf-font-stream PDF embedded font (sfnt) at offset 0x613B 19224 bytes