Malicious PDF — malware analysis report

Static analysis result for SHA-256 26c5b3ce0d692bb0…

MALICIOUS

PDF

37.2 KB Created: 2020-08-23 23:04:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dd8e8c3d2f9e15c639d3047d8d0f0b2 SHA-1: f472b2ffc12996aaaf77683a84ec938122559ade SHA-256: 26c5b3ce0d692bb0dae3b4543dbdf3c7900dc5c320971ea0b26b2ebe5b5790ff
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous embedded URLs. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which likely serves as a gateway to further malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and other PDF files hosted on Shopify. This suggests a campaign focused on SEO manipulation or redirecting users to malicious sites.

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.cc/pify?keyword=ssms+auto+format+sql
    • http://motop.doyenskateshop.com/uploads/1/3/1/1/131164537/fizifiditulagafogum.pdf
    • http://nijodegek.waverlyexchangeclub.org/uploads/1/3/2/6/132682646/3709404.pdf
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/lenizadajupitenetorupo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1986/files/45902567605.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9715790575.pdf
    • https://cdn.shopify.com/s/files/1/0433/6369/6799/files/jubilulelezije.pdf
    • https://cdn.shopify.com/s/files/1/0437/2915/8295/files/zefexok.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/wisufunutodim.pdf
    • https://cdn.shopify.com/s/files/1/0447/9765/7248/files/osrs_pray_calc.pdf
    • https://cdn.shopify.com/s/files/1/0434/1425/7820/files/formation_of_benzylidene_aniline.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_off000056c8.bin
60428da1dbd6ccabadbb0b95af681758d7cd19cd15325052cd0e605c92e6fdb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56C8 5140 bytes
font_01_sfnt_off00006820.bin
90ce7d7d999fad14742e84e68b4fa48c07e973a69c380202a0e10f158f81df66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6820 9536 bytes

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