Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ca5b19d10a23644…

MALICIOUS

PDF

42.8 KB Created: 2020-07-29 03:26:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dbd3a21694f7868c083346513ec6a48 SHA-1: 6d12e344e0fa7c758a35c515045aca4bdc2f2543 SHA-256: 8ca5b19d10a23644a3321971e76faf26427fe1ffdc138ca9cfc0b50de4e04d62
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, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, ttraff.ru, is identified as a malicious redirector. The document body, though heavily obfuscated, contains keywords related to the embedded links, suggesting a social engineering attempt to drive traffic to malicious sites.

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=coroners+reports+online+uk
    • http://files.lordoflifelutheranrc.org/uploads/1/3/1/4/131407214/raved-wupenowobikex-fuwozivesaz-sasozefozegoval.pdf
    • http://files.audreynewmont.net/uploads/1/3/0/9/130969878/98466edbfb.pdf
    • http://files.trancityevent.com/uploads/1/3/1/1/131163777/4133409.pdf
    • http://files.sacredspacehealing.net/uploads/1/3/1/8/131872138/lorijuremurevufisir.pdf
    • http://files.sacredspacehealing.net/uploa
    • https://cdn.shopify.com/s/files/1/0434/4889/3606/files/mamibuvubazonuwegineredav.pdf
    • https://cdn.shopify.com/s/files/1/0434/1356/9687/files/kufurewekamojudobi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2464/5272/files/81053224241.pdf
    • https://cdn.shopify.com/s/files/1/0428/4484/8295/files/33091034791.pdf
    • https://cdn.shopify.com/s/files/1/0429/1330/0647/files/24647349506.pdf
    • https://cdn.shopify.com/s/files/1/0429/5491/6006/files/ketemazamozuwed.pdf
    • https://cdn.shopify.com/s/files/1/0430/4456/9242/files/75159559243.pdf
    • https://cdn.shopify.com/s/files/1/0434/7746/7288/files/godivoju.pdf
    • https://cdn.shopify.com/s/files/1/0440/6195/0117/files/silul.pdf
    • https://cdn.shopify.com/s/files/1/0433/5370/2550/files/2318775100.pdf
    • https://cdn.shopify.com/s/files/1/0434/8254/6341/files/dekojodoxodugezeluduwog.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_off00006ce6.bin
7b334548f5515de569bd15f8ef53aa7a18a9d8864fafa7e9866770d4fec17866		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE6 4572 bytes
font_01_sfnt_off00007c80.bin
0c740b3ef9c0138500e6277535840ee7240ed943741eed21a08974c5384eb44f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C80 9816 bytes

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