Malicious PDF — malware analysis report

Static analysis result for SHA-256 d70a155592dc164c…

MALICIOUS

PDF

46.6 KB Created: 2020-08-05 23:03:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81e47bc3acf452e143cd506bea0e56ba SHA-1: 4ee91a3c3d17848e41c22ee5e9b3c0192a505110 SHA-256: d70a155592dc164c1823d3927448219363c6cae994eaa02afc7fd4d979629667
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used to create link farms for SEO manipulation or to host malicious redirects. One of the primary embedded URLs, 'https://ttraff.ru/pify?keyword=bonaparte+crossing+the+rhine+fiddle+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDFs, suggesting a lure to disguise the malicious intent. The presence of a malicious redirector link strongly indicates an attempt to lead the user to a harmful destination.

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=bonaparte+crossing+the+rhine+fiddle+pdf
    • http://files.elizabethcromano.com/uploads/1/3/1/4/131437530/winonanorixofos.pdf
    • http://files.kcbakes.com/uploads/1/3/1/3/131398125/e787cff26d353de.pdf
    • http://files.rmcmenamin.com/uploads/1/3/0/7/130738596/xorojokufi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/15310145710.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98048873934.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/pocket_style_manual_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/7053/6345/files/pajis.pdf
    • https://cdn.shopify.com/s/files/1/0432/9065/6936/files/63868583556.pdf
    • https://cdn.shopify.com/s/files/1/0433/7847/5162/files/3680057146.pdf
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/rozezojo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0768/0405/files/vofepipizijor.pdf
    • https://cdn.shopify.com/s/files/1/0431/0627/1394/files/the_pocket_book_of_stones.pdf
    • https://cdn.shopify.com/s/files/1/0428/4160/4263/files/nugetimimafipo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/66405804524.pdf
    • https://cdn.shopify.com/s/files/1/0435/5319/4133/files/bobomiregivevobedowikux.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_off00006a57.bin
bb5162e5ecef82bb165f2c3a7aab0a1b1983e1571eef01abbb9d82169642a857		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A57 5468 bytes
font_01_sfnt_off00007ce7.bin
49be218560b8d1f09453423126352c23ca992cba72290bc1af820b3e843b503c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE7 15648 bytes

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