Malicious PDF — malware analysis report

Static analysis result for SHA-256 4237e0f62466d76d…

MALICIOUS

PDF

38.7 KB Created: 2020-08-14 17:32:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 871999b15cefb19393fe6b4084f2336c SHA-1: 6fcde8d66d9d3135ec2daa1e8e9f8a6c3ef8aaa6 SHA-256: 4237e0f62466d76dd21bac654e48e6a9dbb7b98bc69a699842f3dc506003041a
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 Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). The document body, though heavily obfuscated, contains the search query 'platform bed frame twin ikea', suggesting a lure to disguise the malicious link. The primary malicious IOC is the redirector URL.

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.com/pify?keyword=platform+bed+frame+twin+ikea
    • http://vutodig.heykatedewey.com/uploads/1/3/2/7/132741194/busine.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/google_stun_servers.pdf
    • https://cdn.shopify.com/s/files/1/0434/4361/7958/files/bajenujizudibikasegikeva.pdf
    • https://cdn.shopify.com/s/files/1/0433/6553/1806/files/7996482484.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/forces_of_corruption_mods.pdf
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/lifadevepikolodubojo.pdf
    • https://cdn.shopify.com/s/files/1/0436/4946/6526/files/ready_player_one_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/chatterjee_biochemistry_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0420/files/8071640344.pdf
    • https://cdn.shopify.com/s/files/1/0433/5622/5688/files/gegepipivuje.pdf
    • https://cdn.shopify.com/s/files/1/0440/5769/0262/files/83253173688.pdf
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/nagufukapepet.pdf
    • https://cdn.shopify.com/s/files/1/0451/2969/5397/files/basic_terms_of_accounting_in_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0432/2348/2525/files/duzubozogogubajepijepozaj.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_off00005926.bin
a22640d3bae090e9ad2341611dfe1b0ebce8a0d473f6d20d29b1ea91454fe643		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5926 5172 bytes
font_01_sfnt_off00006ab3.bin
6b42bf56f7c5fc6b757357c75ea3a9b0dea1c6a29142f3127a2b783aa01b52ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB3 10372 bytes

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