Malicious PDF — malware analysis report

Static analysis result for SHA-256 c86d03ad50d44a9f…

MALICIOUS

PDF

41.4 KB Created: 2020-08-14 11:19:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6166b0aafaca49a1bf8249b8980986da SHA-1: 738eb4731d3903fb95bceb8baffaa29ea2130178 SHA-256: c86d03ad50d44a9f843b13bf10d7b8f6ac4d7b2008e9847a83bec0ae6b1d036b
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'https://ttraff.cc/wb?keyword=history%20of%20jazz%20music%20pdf'. This suggests a link farm or SEO poisoning attack designed to lure users to malicious infrastructure. The document body itself is heavily obfuscated and contains the malicious URL, further supporting this attack pattern.

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/wb?keyword=history%20of%20jazz%20music%20pdf
    • http://files.ilovemydentaloffice.com/uploads/1/3/2/6/132681665/fibitaj-diwibodakovi.pdf
    • http://files.boyvoyage.net/uploads/1/3/2/3/132302868/magerodumavofe-wudob-zuwaxisewozowas-fesobozaje.pdf
    • http://files.hawkseale.com/uploads/1/3/1/4/131437693/121190.pdf
    • http://kutumad.jahkente.org/uploads/1/3/2/8/132814930/7a7b6b37ac.pdf
    • https://cdn.shopify.com/s/files/1/0434/2589/0469/files/frequency_table_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0449/0359/6187/files/site_initiation_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/7519/0422/files/borderlands_gloria_anzaldua_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5018/files/kedotapiladaluzimi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0722/1661/files/garmin_430_simulator_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0433/4757/4949/files/gofevos.pdf
    • https://cdn.shopify.com/s/files/1/0430/5692/2777/files/92015043001.pdf
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/jam_mathematics_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0447/8697/4869/files/79527931617.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9538/files/fobowek.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/73427344999.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepudanunakadop.pdf
    • https://cdn.shopify.com/s/files/1/0434/1055/5041/files/bsc_cs_syllabus.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_off00006254.bin
ff49ef2fb065a5e3931df940ae5368d9a4aa998f3469a3f49b6cd2122a003cb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6254 5456 bytes
font_01_sfnt_off000074da.bin
8d5993fa22a81620228a2c2bbd1c82c396f9fbf4b4961f8772566bd236066f07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74DA 10192 bytes

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