Malicious PDF — malware analysis report

Static analysis result for SHA-256 504636d1534efe86…

MALICIOUS

PDF

41.7 KB Created: 2020-08-01 11:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66c575b5f75da2501e6e5f48961db52c SHA-1: 888d4e9b3b6fdb9a2697cb575b0096dafa2d81ed SHA-256: 504636d1534efe868c3e417f2069968eda9327eebe04fe9c947e85373207ab90
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, identified as a link farm, designed to redirect users to malicious infrastructure. The primary redirector URL is https://ttraff.ru/pify?keyword=gta+5+dns+codes+xbox+one. The document body contains garbled text and metadata suggesting it was generated by wkhtmltopdf, and includes the malicious redirector URL, further supporting the malicious intent.

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=gta+5+dns+codes+xbox+one
    • http://files.bottlesbyphoenix.com/uploads/1/3/0/8/130873849/nilasabomifovu.pdf
    • http://files.shueyvillechurch.org/uploads/1/3/0/7/130740524/7988078.pdf
    • http://files.lovebirdsvintagedecorrentalsofpa.com/uploads/1/3/1/6/131637953/fitozovobadi.pdf
    • http://files.bokomarupublications.com/uploads/1/3/0/7/130775834/6d3c391071e.pdf
    • http://files.4arrowsoutdoors.com/uploads/1/3/0/8/130814672/1910526.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/kusemelidemivavexusijeno.pdf
    • https://cdn.shopify.com/s/files/1/0430/8425/1285/files/xatorexam.pdf
    • https://cdn.shopify.com/s/files/1/0438/3067/3565/files/89182429439.pdf
    • https://cdn.shopify.com/s/files/1/0438/4089/7174/files/bosotulaxokidisagabawuwe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1778/files/83701997399.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99203043279.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/ripalesomufirafolobunomin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tikifulodu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bepojarovizezeba.pdf
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/29031107895.pdf
    • https://cdn.shopify.com/s/files/1/0431/0600/9255/files/50851747359.pdf
    • https://cdn.shopify.com/s/files/1/0437/9767/6192/files/70952947484.pdf
    • https://cdn.shopify.com/s/files/1/0433/4095/5803/files/timawaluta.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/menomepubif.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/86246346392.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_off000065ab.bin
531db493f32788ab05a1d6e4714775fba99d6c5cb9c8a56ddb758bdb7f1de4a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x65AB 5168 bytes
font_01_sfnt_off0000775e.bin
c55e5b49d4bf62a99c6ebec7824f5561c0392be8f0b397a3f893f75b9f4337f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x775E 10180 bytes