Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6472789527b1d96…

MALICIOUS

PDF

43.5 KB Created: 2020-08-25 04:41:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 540a0b81a5892741054544cd2d08ee7c SHA-1: 697f1cd67f23f1659fcb592213110fc465eb116f SHA-256: c6472789527b1d96bb21bf5a24ed28469462ca1822e43c7720972c077726e5c7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the URL that triggered the redirector, suggesting a lure related to 'agronomic practices of maize'. The presence of a large number of external PDF links further supports the SEO link farm heuristic.

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=agronomic+practices+of+maize+pdf
    • http://jefewomo.isleinterpret.com/uploads/1/3/2/6/132681479/3050649.pdf
    • http://wefos.wellbeingpetcare.com/uploads/1/3/1/4/131437622/kenijiloxanuxinimome.pdf
    • http://fatovemu.nihc.ca/uploads/1/3/2/6/132683138/pezofugamokuk-fabipa-puzejulagog.pdf
    • https://cdn.shopify.com/s/files/1/0435/5309/5844/files/rurunuvinugeboneke.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96704933611.pdf
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/vubekanoselipufo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojezurin.pdf
    • https://cdn.shopify.com/s/files/1/0433/1808/3742/files/8996904155.pdf
    • https://cdn.shopify.com/s/files/1/0437/3633/4490/files/63662297632.pdf
    • https://cdn.shopify.com/s/files/1/0438/2579/1133/files/aspire_3_a315_54.pdf
    • https://cdn.shopify.com/s/files/1/0437/6385/9617/files/kugupel.pdf
    • https://cdn.shopify.com/s/files/1/0433/8280/0542/files/21462276156.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/vefekagisenuvetonilova.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/obsessed_movie_script.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_off00006a75.bin
124712137f9c72025f4da379823414f8905d81e0285d32b517b2e5b8ab1f6112		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A75 5484 bytes
font_01_sfnt_off00007d01.bin
41899df734b08b39403fba92ee96d26b36255c0648c26e0bcb70bcb2469ea3a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D01 10572 bytes

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