Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd52dee43bed2597…

MALICIOUS

PDF

49.7 KB Created: 2020-07-28 19:02:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e9bc4c16458caaf0fd28210a41f5cc2 SHA-1: e861f1a73d0d4c0979b0354363122ef3c22a613b SHA-256: fd52dee43bed2597f34bea1fafbbd47825d496c70f201cb8b25f45473ef74ec7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is disguised as a free car service check sheet template. The PDF also contains a large number of links to external PDFs hosted on Shopify, likely for SEO manipulation to improve search engine ranking for malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

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.cc/pify?keyword=free+car+service+check+sheet+template
    • http://files.weddingplannerburnaby.ca/uploads/1/3/0/7/130740292/2921147.pdf
    • http://files.freedomdds.com/uploads/1/3/1/0/131070481/nojevimijikotigi.pdf
    • http://files.theclassico.ca/uploads/1/3/2/7/132741194/pixojuluwalasevurij.pdf
    • http://files.the-tan-can.com/uploads/1/3/2/8/132815742/bupididaniv.pdf
    • http://files.abrushwithnature.studio/uploads/1/3/1/4/131406885/184799.pdf
    • https://cdn.shopify.com/s/files/1/0429/2670/2755/files/31781793623.pdf
    • https://cdn.shopify.com/s/files/1/0432/1542/1599/files/tasamidisa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/26144047971.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/bexokilix.pdf
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/78787132288.pdf
    • https://cdn.shopify.com/s/files/1/0437/2607/8101/files/vejolanipuxobapomo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6539/0757/files/25659015117.pdf
    • https://cdn.shopify.com/s/files/1/0432/7001/3086/files/54699131641.pdf
    • https://cdn.shopify.com/s/files/1/0433/8424/2337/files/25339530927.pdf
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/weniwoz.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_off000085fa.bin
a2d73f5bac82a06d0b65882af393744a4686de5874e86b3ca161bab269fb6be4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85FA 4824 bytes
font_01_sfnt_off0000965c.bin
94782ec3671ae0fd79e4a2270a68aa7beabe1c88a03ac950759d9521d8f66362		 pdf-font-stream PDF embedded font (sfnt) at offset 0x965C 10212 bytes

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