Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61fa45928075df3…

MALICIOUS

PDF

32.5 KB Created: 2020-08-15 22:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 985f5834524ac1d9006d4fa368535522 SHA-1: 3fdf1be2f1606e9dd45dcdd19ab46ad9acc8eb18 SHA-256: b61fa45928075df3bd08fcd53141f27abfd1a0f1cc289c06a15e20f0e8a53d89
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, 'https://ttraff.com/pify?keyword=arjun+reddy+tamil+audio+track', is designed to lure users by appearing to offer content related to a popular movie. This URL redirects to other links, including benign-looking PDFs hosted on Shopify, but ultimately leads to malicious infrastructure. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.com/pify?keyword=arjun+reddy+tamil+audio+track
    • http://gaved.markdavidkaufman.com/uploads/1/3/2/6/132683071/4594271.pdf
    • https://cdn.shopify.com/s/files/1/0430/9821/0461/files/wokerewozaga.pdf
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/83937195843.pdf
    • https://cdn.shopify.com/s/files/1/0432/2122/1539/files/the_technology_of_anodizing_aluminium.pdf
    • https://cdn.shopify.com/s/files/1/0440/3019/7925/files/the_bartender_s_bible_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0434/9450/6661/files/26486037647.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3820/files/60572067119.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/jirizukutitavanamazuxoreb.pdf
    • https://cdn.shopify.com/s/files/1/0443/4133/0076/files/business_law_class_notes.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000041ad.bin
9cb67446be496f26bd6d1774c9d8e800fdd09434c21dcf11384735e228c084c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x41AD 5136 bytes
font_01_sfnt_off0000531a.bin
82ae83fa72a2c73e1f12d861f3d591f83fd9c00260bd7acd4a2740ea3b893360		 pdf-font-stream PDF embedded font (sfnt) at offset 0x531A 10196 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.