Malicious PDF — malware analysis report

Static analysis result for SHA-256 d75cb40e6ab7d9df…

MALICIOUS

PDF

40.6 KB Created: 2020-08-25 03:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5abe2baf9fac4c321f33a8e40a5c5413 SHA-1: 400f717b43a6fe1436afab7c5fddb15dced8fa56 SHA-256: d75cb40e6ab7d9df69cb1436271e98f9e6fa959018794634cfabcb8f374219ea
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, but one critical link directs to a known malicious redirector at 'https://ttraff.ru/pify?keyword=kawakawa+bay+rock+climbing+guide'. This suggests a link farm or SEO poisoning technique used to distribute malicious content. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing its role as a lure. No scripts were extracted, but the primary attack pattern involves redirecting the user to a malicious site.

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=kawakawa+bay+rock+climbing+guide
    • http://files.jurneyofhope.com/uploads/1/3/1/4/131406717/35cbad5b2.pdf
    • http://files.vapath.org/uploads/1/3/1/4/131409709/6197041.pdf
    • https://cdn.shopify.com/s/files/1/0428/8145/0147/files/19339807448.pdf
    • https://cdn.shopify.com/s/files/1/0433/1474/1413/files/72188372889.pdf
    • https://cdn.shopify.com/s/files/1/0460/0492/8679/files/wugupigilifuzolojel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jonexosorovofevovu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6714/6397/files/vowalipozuzegulejasax.pdf
    • https://cdn.shopify.com/s/files/1/0435/4582/1338/files/73913393460.pdf
    • https://cdn.shopify.com/s/files/1/0451/7101/5829/files/kalimba_tablature_software_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/0717/9941/files/celebrate_it_michaels_templates.pdf
    • https://cdn.shopify.com/s/files/1/0436/4913/8846/files/sirozowisegemujiru.pdf
    • https://cdn.shopify.com/s/files/1/0433/3800/6686/files/75701063030.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/949986333.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_off00005fcc.bin
cc63f1d030b36d92ddf6654e665090dabab76d9dac4cfafc8971cb06bddab2ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCC 5448 bytes
font_01_sfnt_off0000724e.bin
8725ac964c5dc4302f25d2a31d4ba0fc9250d5143d482ca0c7013c35536e7f40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724E 10420 bytes

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