Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a7bff7929d49968…

MALICIOUS

PDF

42.7 KB Created: 2021-05-16 17:09:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 149fc1013bd3964778f7059cb54a6507 SHA-1: d5fb196e3af3145ad1203bee89cf411e4c85b275 SHA-256: 4a7bff7929d4996830f9e424110e5983a7223a75ffa53f52c091fb78d7a24d64
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized PDFs related to game hacks and free currency. The document body and heuristics indicate a lure for free in-game items, likely leading to scam pages or malware downloads. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/rbx-land-free-robux-game-hack
    • http://behsanroshd.com/images/today-free-spin-coin-master_GM406889139.pdf
    • http://behsanroshd.com/images/coin-master-gold-cards-hack-2021_GM406889139.pdf
    • http://behsanroshd.com/images/coin-master-free-pet-food-links_GM406889139.pdf
    • http://behsanroshd.com/images/master-coin-hack-app_GM406889139.pdf
    • http://behsanroshd.com/images/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdf
    • http://behsanroshd.com/images/coin-master-real-hack_GM406889139.pdf
    • http://behsanroshd.com/images/free-robux-without-human-verification-real_GM431946152.pdf
    • http://behsanroshd.com/images/coin-master-daily-spin-free_GM406889139.pdf
    • http://behsanroshd.com/images/www-coinmaster-com_GM406889139.pdf
    • http://behsanroshd.com/images/free-robux-group_GM431946152.pdf
    • http://behsanroshd.com/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdf
    • http://behsanroshd.com/images/60-free-spins-on-coin-master_GM406889139.pdf
    • http://behsanroshd.com/images/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdf
    • http://behsanroshd.com/images/como-hackear-coin-master-2021-espaol_GM406889139.pdf
    • http://behsanroshd.com/images/original-roblox_GM431946152.pdf
    • http://behsanroshd.com/images/coin-master-app-hacks_GM406889139.pdf
    • http://behsanroshd.com/images/free-robux-by-watching-ads_GM431946152.pdf
    • http://behsanroshd.com/images/coin-master-club-hack_GM406889139.pdf
    • http://behsanroshd.com/images/coin-master-spins-2021_GM406889139.pdf
    • http://behsanroshd.com/images/cute-free-hair-on-roblox_GM431946152.pdf
    • https://discord
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047af.bin
97a732ae6bd0ea4a88b5f751d4391a397ffb9110f513084ec292c56bf562a6d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47AF 26464 bytes
font_01_sfnt_off00008425.bin
ed1846d837a30ccb27e25bdb955d82aabb746909bdcfb120b1e9cc4e6290fa01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8425 18416 bytes

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