Malicious PDF — malware analysis report

Static analysis result for SHA-256 c50c7fb5cc2eafbc…

MALICIOUS

PDF

40.3 KB Created: 2020-08-15 07:22:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b1f9501016c62130b392e00eb225ee4 SHA-1: ccffb58d05104fb53861ff5a6cbdb0ea31c5563f SHA-256: c50c7fb5cc2eafbc11b524559f94cc7bb20932a9d3e7e4a5acad2f22fdf34ed8
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body also contains the same URL, suggesting an attempt to lure users to malicious content, possibly for SEO poisoning or phishing. 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=armored+god+apk+hile
    • http://nedegiwa.besseling-northamerica.com/uploads/1/3/1/1/131164250/7340b3f51605fa.pdf
    • http://xuduxezof.gerrywatkins.com/uploads/1/3/1/1/131164250/1536736.pdf
    • http://files.hidingdivyathemovie.com/uploads/1/3/2/7/132741385/pijelinoravux-kejewafutivulir-javinu-bomiga.pdf
    • http://files.gracefulbeginnings.ca/uploads/1/3/2/6/132681579/8fa6a9da4c58.pdf
    • https://cdn.shopify.com/s/files/1/0427/8393/2582/files/82434473977.pdf
    • https://cdn.shopify.com/s/files/1/0454/9004/5080/files/vuviwiweriwosute.pdf
    • https://cdn.shopify.com/s/files/1/0439/5397/9550/files/belgium_tourist_visa_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/budoxugufowa.pdf
    • https://cdn.shopify.com/s/files/1/0428/6909/6615/files/accords_guitare_gaucher.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/45660188135.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/85278298794.pdf
    • https://cdn.shopify.com/s/files/1/0429/2778/4095/files/27703603878.pdf
    • https://cdn.shopify.com/s/files/1/0434/9558/8002/files/mulutofebasolejepu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2244/9814/files/mimudol.pdf
    • https://cdn.shopify.com/s/files/1/0432/9888/1704/files/fodubugogigumabarejejak.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_off00006226.bin
8128da163de219e4ab8801c3019628626d0233973d176eb26adfb5cddb638c15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6226 5248 bytes
font_01_sfnt_off000073d6.bin
8ba17b1f24f66b885e4b98e0093f7072a6ac32c36fcf8af12e78135a5da4bb7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73D6 9708 bytes

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