Malicious PDF — malware analysis report

Static analysis result for SHA-256 295eb10a9e1a39e7…

MALICIOUS

PDF

42.3 KB Created: 2020-08-05 04:17:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81e47223ef132527cb309e61d18908b4 SHA-1: e62a9c9366eb61072e3f663139dc3ee23537eead SHA-256: 295eb10a9e1a39e70623cc63588f74438369be1e63adc48d77727cfa7c7dc910
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the primary malicious payload delivery mechanism. The document body is heavily obfuscated and contains what appears to be a reconstructed URL, suggesting an attempt to disguise the malicious link.

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=spreader+beam+design+pdf
    • http://files.guntersvillelionsclub.com/uploads/1/3/2/6/132682883/rotugazuwitetaj.pdf
    • http://files.metrolandrealtyph.com/uploads/1/3/1/4/131437983/469b2c.pdf
    • http://files.ousiafreediving.com/uploads/1/3/1/8/131871558/lozes.pdf
    • http://files.pslerevision.com/uploads/1/3/0/7/130776298/2f6577e75b.pdf
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/ralokaj.pdf
    • https://cdn.shopify.com/s/files/1/0441/2535/6184/files/innovators_dilemma_summary.pdf
    • https://cdn.shopify.com/s/files/1/0440/7299/2918/files/23348654098.pdf
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/nojupas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/77363931764.pdf
    • https://cdn.shopify.com/s/files/1/0431/0269/9681/files/zelegowoxetexezezuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/7111/8235/files/daxosuxizutijasex.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/tapezadojijasulijun.pdf
    • https://cdn.shopify.com/s/files/1/0431/5129/4619/files/93212150221.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/98752934250.pdf
    • https://cdn.shopify.com/s/files/1/0433/7447/7464/files/mikuni_carb_adjustment_manual.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_off00006635.bin
38aa32d5aa236b1d4d26f657672c91618c8a4298e236eb9c1c13bec0479eb856		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6635 5572 bytes
font_01_sfnt_off00007906.bin
ecd1d95019662dbc9a888081f72dabb741add43b34d9af70ab984a01329c7029		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7906 10356 bytes

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