Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd51f3b100c5b8f4…

MALICIOUS

PDF

41.6 KB Created: 2020-08-12 05:37:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4836213327de9f5bcefd83d7f8d5af67 SHA-1: ece333283ae47aa1be563afc4d858fcc9bb6d4d2 SHA-256: dd51f3b100c5b8f4d8a4e1473316ce155d03654e93a6bc1836760ac81cbceed4
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and a plausible lure text related to a camera manual. This indicates the primary goal is to redirect the user to a malicious site. No scripts were extracted from this sample.

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=canon+80d+instruction+manual+pdf
    • http://files.derrenbackergroupbenefits.com/uploads/1/3/1/3/131381095/a44faaa52b193f.pdf
    • http://files.cadencelexington.com/uploads/1/3/1/1/131163747/gamixoximozo.pdf
    • http://magixak.christineblanchet.co.uk/uploads/1/3/2/6/132681556/60658445b7.pdf
    • http://files.rumidesigners.com/uploads/1/3/1/3/131384300/xisazaxabifu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8780/7129/files/gekivu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5612/8412/files/91066591122.pdf
    • https://cdn.shopify.com/s/files/1/0434/0200/2597/files/91933836582.pdf
    • https://cdn.shopify.com/s/files/1/0434/7107/7542/files/78765709224.pdf
    • https://cdn.shopify.com/s/files/1/0429/0271/6572/files/band_of_brothers_book_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/79151419738.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/41456058461.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7603/files/semicolon_and_comma_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/4868/1120/files/fokozeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.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_off00006391.bin
ff082240104ea3cf765d0756fc2f3e71d8b6d5f400f9f5da116e3143cf931070		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6391 5544 bytes
font_01_sfnt_off00007646.bin
a82c593e2bba1c07b8f1150a5ce825b3a8dcfac025741591514670ac1b8b9d31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7646 10280 bytes

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