Malicious PDF — malware analysis report

Static analysis result for SHA-256 433d88590855b42f…

MALICIOUS

PDF

35.2 KB Created: 2021-06-19 18:59:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ea1cdf729a82069a6bcb5efa8ce47a55 SHA-1: 691e33484155ff750291986731cc5b25c84d59ec SHA-256: 433d88590855b42f2f5dc88b4e5338b04493a79478cd694745a8b6d433d7fcd2
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded links, many of which are SEO-optimized and point to pages offering game hacks or currency generators. The ML classifier strongly indicates maliciousness, and the presence of external URIs suggests the document is designed to redirect users to potentially harmful sites. The document body, though partially corrupted, contains references to 'Roblox Hack' and URLs that reinforce this theme.

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/allahuakbar-roblox-hack-game-hack
    • http://www.access-coiffure-tours.fr/images/can-i-get-free-robux_GM431946152.pdf
    • http://www.access-coiffure-tours.fr/images/roblox-robux-generator-tool_GM431946152.pdf
    • http://www.access-coiffure-tours.fr/images/how-to-get-explorer-up-on-roblox-hack_GM431946152.pdf
    • http://www.access-coiffure-tours.fr/images/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdf
    • http://www.access-coiffure-tours.fr/images/how-to-get-free-robux-easy-no-download_GM431946152.pdf
    • http://www.access-coiffure-tours.fr/images/why-is-it-so-easy-to-hack-roblox_GM431946152.pdf
    • http://www.access-coiffure-tours.fr/images/free-robux-generator-trackid-sp006_GM431946152.pdf
    • http://www.access-coiffure-tours.fr/images/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://www.access-coiffure-tours.fr/images/how-do-you-get-free-robux_GM431946152.pdf
    • http://www.access-coiffure-tours.fr/images/free-robux-press-g_GM431946152.pdf
    • http://www.access-coiffure-tours.fr/images/how-do-you-get-free-robux-without-paying_GM431946152.pdf
    • http://www.access-coiffure-tours.fr/images/money-hack-for-royall-high-school-roblox_GM431946152.pdf
    • http://www.access-coiffure-tours.fr/images/roblox-deadzone-remade-hack_GM431946152.pdf
    • http://www.access-coiffure-tours.fr/images/free-tiktok-followers-no-verification-or-survey_GM835599320.pdf
    • http://www.access-coiffure-tours.fr/images/free-robux-just-by-watching-ads_GM431946152.pdf
    • http://www.access-coiffure-tours.fr/images/minecraft-life-hacks_GM479516143.pdf
    • http://www.access-coiffure-tours.fr/images/free-coin-master-spins-link_GM406889139.pdf
    • http://www.access-coiffure-tours.fr/images/how-to-hack-roblox-for-rebirth_GM431946152.pdf
    • http://www.access-coiffure-tours.fr/images/haktuts-coin-master-free-spin-link_GM406889139.pdf
    • http://www.access-coiffure-tours.fr/images/claim-free-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_off000031bb.bin
dafdf1d6146a41de45b5f6f237b15ad1d1a66abdeecab4a1226b536e9e936916
pdf-font-stream PDF embedded font (sfnt) at offset 0x31BB 23052 bytes
font_01_sfnt_off00006588.bin
3bc2676ce3f61eca41a701ea67e0c9618a306acccb2b4c9c35262a13ac90424b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6588 18776 bytes