Malicious PDF — malware analysis report

Static analysis result for SHA-256 314db970df66fd87…

MALICIOUS

PDF

40.5 KB Created: 2020-08-22 11:24:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73c1f07b49e5a84bfa7f3a3b0dab8857 SHA-1: 162a86895a436d52ac59a42a706076d3240df718 SHA-256: 314db970df66fd87785448d63258ab3e832ebc1b7dedb225ef52e8fb7845f692
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=facebook+analytics+android+integration'. It also exhibits characteristics of a PDF link farm, embedding numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify-hosted PDF links, reinforcing the lure. The primary intent appears to be directing users to malicious infrastructure.

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=facebook+analytics+android+integration
    • http://ziveli.fwsudbury.org/uploads/1/3/0/7/130738973/pogokitop.pdf
    • http://wejebere.juliahobdayphotography.com/uploads/1/3/0/7/130775195/8387d1c1f5e0.pdf
    • http://files.fnglapalmbeach.com/uploads/1/3/1/1/131164033/pewexi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/nofunexa.pdf
    • https://cdn.shopify.com/s/files/1/0436/1653/4690/files/67140451082.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/sekakezokovazomuzu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6812/9431/files/tuwifuzun.pdf
    • https://cdn.shopify.com/s/files/1/0433/7133/1734/files/biochemistry_review.pdf
    • https://cdn.shopify.com/s/files/1/0431/0564/8801/files/kewivaxekarivokikirigawib.pdf
    • https://cdn.shopify.com/s/files/1/0435/4772/1892/files/85355483258.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/4280424599.pdf
    • https://cdn.shopify.com/s/files/1/0430/8634/8450/files/37315846093.pdf
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/tukotajij.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_off00005f23.bin
b8007c76b1b3600c6c5836755790e63ff19403bbbd4bff0fbb727119572d10f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F23 5368 bytes
font_01_sfnt_off00007173.bin
5e1ca06caf5d5c638e689958003f811d5e78b18e9f0bdc854aefdcb2a973b5b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7173 10412 bytes

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