Malicious PDF — malware analysis report

Static analysis result for SHA-256 262930530bfb28e8…

MALICIOUS

PDF

42.5 KB Created: 2020-08-22 15:11:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c11dde181b386768d03b192999ec0043 SHA-1: 54375570c7b6b0255e4ba848113e22126da95d86 SHA-256: 262930530bfb28e8da674612a1955a5f989340400da83861b4d356aa9346c2b7
150 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains numerous embedded links. One of these links, https://ttraff.ru/pify?keyword=westlake+platform+bed+walmart, is identified as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to redirect users to malicious content through a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=westlake+platform+bed+walmart
    • http://nilazaj.adammichaelmcgee.com/uploads/1/3/0/8/130874359/6ba2a95061f.pdf
    • http://zosomo.rebornfestival.com/uploads/1/3/0/7/130739240/eb794.pdf
    • http://files.qishiazusa.com/uploads/1/3/2/6/132681201/c3164.pdf
    • http://badirada.jackandbuenafoundation.org/uploads/1/3/1/3/131398560/3c03173.pdf
    • http://files.jracdm.com/uploads/1/3/2/6/132680962/474c5e7c64.pdf
    • https://cdn.shopify.com/s/files/1/0430/1986/2179/files/lubavefiresokam.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/14469246188.pdf
    • https://cdn.shopify.com/s/files/1/0435/1718/2104/files/sajupofode.pdf
    • https://cdn.shopify.com/s/files/1/0435/4038/1855/files/lepitewimirajoteju.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/taripukape.pdf
    • https://cdn.shopify.com/s/files/1/0429/8031/1203/files/96170826990.pdf
    • https://cdn.shopify.com/s/files/1/0435/1279/1192/files/55474215782.pdf
    • https://cdn.shopify.com/s/files/1/0431/5735/6695/files/ensefalopati_dengue_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0429/1916/6105/files/libure.pdf
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/derelu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/wedizetax.pdf
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/54231643244.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_off0000679d.bin
6a283a7c3be7512de6ffcc2c5b97d2b83508bb7e8897a5dcaffdd13bc64f360a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x679D 5496 bytes
font_01_sfnt_off00007a4e.bin
fb2c92176ad9cd32f30ea8ae1f47f77f553f4d5c5790f153306d301ed7ee493d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4E 10200 bytes

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