Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c5150ced426e79…

MALICIOUS

PDF

49.1 KB Created: 2020-08-24 02:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 561e53e0067c72a3cd1e7c76b9b2a9a4 SHA-1: a5808f725a2c47c160e1349fb7d49fb84ac47f3a SHA-256: c6c5150ced426e79f12d9157214c525d0d6d58bf7af45269ecf3957ba0d2ce46
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=empyema+guideline+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains references to 'Empyema guideline pdf' and the tool 'wkhtmltopdf', suggesting a lure to disguise malicious content.

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.ru/pify?keyword=empyema+guideline+pdf
    • http://guwemovov.californiaconservationoftrails.org/uploads/1/3/2/8/132814097/musujetasevenu.pdf
    • http://fakepasup.primaryelements.net/uploads/1/3/1/0/131070993/9889931.pdf
    • http://pajas.preptheday.com/uploads/1/3/2/6/132682137/mabeguxuvamema.pdf
    • http://files.4bodyandsole.com/uploads/1/3/1/0/131070500/nevozixasef-ruwupivefiv.pdf
    • http://iom.nati
    • https://cdn.shopify.com/s/files/1/0428/0696/8483/files/quarta_bucolica.pdf
    • https://cdn.shopify.com/s/files/1/0434/4414/2245/files/ninopolaxuzadixoja.pdf
    • https://cdn.shopify.com/s/files/1/0434/1615/8359/files/folebapemorefixigef.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/13265705844.pdf
    • https://cdn.shopify.com/s/files/1/0462/2689/9095/files/29868167158.pdf
    • https://cdn.shopify.com/s/files/1/0435/2848/7072/files/nuretapuxukusozirozo.pdf
    • https://cdn.shopify.com/s/files/1/0429/4351/2732/files/bwv_1065.pdf
    • https://cdn.shopify.com/s/files/1/0439/7573/7502/files/34187938077.pdf
    • https://cdn.shopify.com/s/files/1/0434/0819/5738/files/lees_reloading_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/ansys_workbench_book_download.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_off000083ab.bin
eddd7b2cc9e1318b38216e3e346f6cd509e54573b8233d826d79a686dccc50c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83AB 5148 bytes
font_01_sfnt_off0000952a.bin
7ba33f08f719d45c5abe77b2662cd3dd9c5739134240c734f8c184f09df6c48d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x952A 10056 bytes

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