Malicious PDF — malware analysis report

Static analysis result for SHA-256 320403dfb0642162…

MALICIOUS

PDF

34.2 KB Created: 2021-07-01 03:15:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: cbdb1a0ab7ab3156cf77f569dc3b5d14 SHA-1: 576eb7efd256a84c03cbf69cd6fddcfea5b3c3bc SHA-256: 320403dfb0642162cb004637e45d5fe0df2ad81cbe8ea07fc7b7dfa5fa740d5c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded URLs, many of which are SEO-optimized links to other PDF files, suggesting a link farm designed to lure users. The primary URL http://netcdn.co/app/431946152/code-hack-examiner-element-forum-roblox-game-hack is likely a landing page for malicious content. The ML classifier strongly indicated maliciousness, and the presence of numerous external links points towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/code-hack-examiner-element-forum-roblox-game-hack PDF link annotation
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/how-to-retrieve-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/can-you-hack-roblox-by-puttin-hack-the-players-name_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/furky-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/cheats-for-snow-shovelling-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/roblox-vehicle-simulator-hack-script_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/how-to-hack-your-robux_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-roblox-bubble-gum-simulator-accounts_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/seraph-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/how-to-get-1-million-robux-without-hacking_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E9A 22064 bytes
SHA-256: e089656209f584b9f8b5bfd58a453268622cab9d6368e5556d70f89ce4c77306
font_01_sfnt_off00005f71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F71 19620 bytes
SHA-256: 100c645bf030a78a716f3dd24ebdcd3887a83e7f9def7e5345a5aa03b9960126

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