Malicious PDF — malware analysis report

Static analysis result for SHA-256 74e620df63c96a45…

MALICIOUS

PDF

41.4 KB Created: 2020-09-07 11:02:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dd6c304fb7f762c36cb7ac474e18d3c SHA-1: 9c1d523b5e88627b0beb5d40ee4ae96576565c66 SHA-256: 74e620df63c96a454e503ff9ae76705770e63605fbbc4e8472bf09f4a760cb85
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. One of the primary links directs to 'ttraff.me', which is identified as a malicious redirector. The document body contains garbled text but includes the malicious URL and several Shopify-hosted PDF links, some of which are confirmed benign but others are part of the suspicious 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.me/wix?keyword=surf+fishing+report+long+beach+island
    • https://cdn.shopify.com/s/files/1/0435/3291/0751/files/remivesebex.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/18926805770.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/76423611257.pdf
    • https://cdn.shopify.com/s/files/1/0432/5287/5432/files/51087148046.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuxopikuxoxixu.pdf
    • https://static.usrfiles.com/ugd/906e9f_657316edacb549c8934ae4e74ea5ddd0.pdf
    • https://cdn.shopify.com/s/files/1/0430/9513/0266/files/sabikasatujet.pdf
    • https://cdn.shopify.com/s/files/1/0432/4737/0402/files/51792970399.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49726552648.pdf
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/54135332069.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/kijomudusizewerufufapoxi.pdf
    • https://static.usrfiles.com/ugd/4c1554_fa6b328c7d3c4705bd9c3c63a054e204.pdf
    • https://static.usrfiles.com/ugd/3b0c81_4385eb0fa14f4bab8ea2dbc702d65936.pdf
    • https://static.usrfiles.com/ugd/8b9728_a30b84e1ea9f4d45b25bd59f7798fd32.pdf
    • https://static.usrfiles.com/ugd/b8c837_2dfd60b35f3e44b8b92fc60f917c2efa.pdf
    • https://static.usrfiles.com/ugd/cf14a4_f47091c6ee71425aa7d250056e06ef94.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_off00006281.bin
ad6fc810a8f83f5242831b2a7302ee1a8720227fee4cc7465615ea038dec8e54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6281 5660 bytes
font_01_sfnt_off000075b8.bin
66327993f891cccc31d0ad9377ac30cd5e968fcad611d95fa518600eb5f5d6db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75B8 10292 bytes

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