Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d0a8ed294a62763…

MALICIOUS

PDF

33.1 KB Created: 2021-07-06 20:26:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d22cb2e094f0523bdc0c4ba11feb083a SHA-1: 9aa3a9b92d8bba32cd321300fe6c6dc364f203cf SHA-256: 5d0a8ed294a62763f15a1f6f015201b5b5603dc61354ba10d13793fbcad69064
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, forming a link farm, with a primary URL pointing to a 'robux-game-hack' download. The document body and extracted URLs suggest a lure for game-related cheats, likely to distribute malware. Although no scripts were explicitly extracted, the PDF structure and the presence of external links indicate a potential for JavaScript execution or redirection to malicious sites.

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.tw/app/431946152/robux-game-hack
    • https://ciudadata.ec/images/ckfinder/files/roblox-free-jailbreak-vip-server_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/50-free-spins-coin-master-links_GM406889139.pdf
    • https://ciudadata.ec/images/ckfinder/files/comment-entrer-un-code-sur-roblox-cheat_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/impact-hack-roblox_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/how-to-hack-coin-master-ios_GM406889139.pdf
    • https://ciudadata.ec/images/ckfinder/files/minecraft-free-online-unblocked_GM479516143.pdf
    • https://ciudadata.ec/images/ckfinder/files/how-can-you-get-free-robux_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/hack-coin-master-site-rssingcom_GM406889139.pdf
    • https://ciudadata.ec/images/ckfinder/files/coin-master-free-spins-promo-code_GM406889139.pdf
    • https://ciudadata.ec/images/ckfinder/files/free-spins-coin-master-ios-links_GM406889139.pdf
    • https://ciudadata.ec/images/ckfinder/files/coinmaster-free-spins-link_GM406889139.pdf
    • https://ciudadata.ec/images/ckfinder/files/free-robux-script_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/rich-roblox-accounts-free_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdf
    • https://ciudadata.ec/images/ckfinder/files/how-to-instantly-get-free-robux-in-roblox-2021-oprewards_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/free-coin-and-spin-in-coin-master_GM406889139.pdf
    • https://ciudadata.ec/images/ckfinder/files/free-robux-generator-2021-no-app-download_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/free-robux-hacks-no-verification_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/roblox-cheat-engine-bypass-july-2021_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/gold-cards-coin-master-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c8c.bin
95fc833846140ba3903e9fac77b07cfc057a04d46a8acfad32d0e3ebde00c4d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8C 22128 bytes
font_01_sfnt_off00005da7.bin
da1723751bedafcb1f5ccdcef895f5533c90f7cf63bf49ed0807a84e3f782e55
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA7 18552 bytes