Malicious PDF — malware analysis report

Static analysis result for SHA-256 45935836bf7d68b4…

MALICIOUS

PDF

42.3 KB Created: 2021-05-18 05:41:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 61c21db832c1bdf70d2915716b7877b8 SHA-1: e22c95ef58c8a9dbaea16f1eaea6a93656786f37 SHA-256: 45935836bf7d68b473db457a8101edae597a6db829e53531bafbba6b65ff2ee2
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which are part of a link farm, directing users to websites offering game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of a large number of external links suggests an attempt to redirect users to potentially harmful content or download sites. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

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/406889139/coin-master-spin-cheat-game-hack
    • http://apteka-ot-sklada.com.ua/images/roblox-games-with-free-vip-servers_GM431946152.pdf
    • http://apteka-ot-sklada.com.ua/images/can-you-really-hack-coin-master-ios_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/is-minecraft-education-edition-free_GM479516143.pdf
    • http://apteka-ot-sklada.com.ua/images/cheat-codes-for-coin-master_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/roblox-hackers-list_GM431946152.pdf
    • http://apteka-ot-sklada.com.ua/images/coin-master-hack-unlimited-spins_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/my-minecraft-account-was-hacked_GM479516143.pdf
    • http://apteka-ot-sklada.com.ua/images/free-spins-coins-coin-master_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/legit-coin-master-hack_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/coin-master-hack-coins_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdf
    • http://apteka-ot-sklada.com.ua/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/coin-master-free-coins-and-spins-link_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/how-do-you-hack-roblox_GM431946152.pdf
    • http://apteka-ot-sklada.com.ua/images/free-2021-robux_GM431946152.pdf
    • http://apteka-ot-sklada.com.ua/images/roblox-studio-free-robux_GM431946152.pdf
    • http://apteka-ot-sklada.com.ua/images/roblox-booga-booga-hack_GM431946152.pdf
    • http://apteka-ot-sklada.com.ua/images/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/instagram-coin-master-free-spins_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a26.bin
fa59b4b0d14674eff42eaaade201f736bf58debc147040a18568c4c6d9ae757b
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A26 25588 bytes
font_01_sfnt_off0000842c.bin
6e952cda52cab557889c44e050e091d78c8f903a1a78f0754c4b08395fb72fca
pdf-font-stream PDF embedded font (sfnt) at offset 0x842C 17888 bytes