Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd2ca3f0759cb87…

MALICIOUS

PDF

33.0 KB Created: 2020-08-25 06:45:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77f9550438c1da22aa265bfdcd89d0b4 SHA-1: 9b2f89bb6b5c71ae8c685b1730a59f1089260e1b SHA-256: ffd2ca3f0759cb87b6d5b40f5db63190c293ea607de1707565f2f91cd8a1c7e2
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF link farm. One of these links points to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body text is largely garbled, but the presence of the URL 'https://ttraff.cc/pify?keyword=avery+table+of+contents+template' within the document content suggests a lure related to templates. No scripts were extracted from this sample.

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=avery+table+of+contents+template
    • http://files.bluesystem.ca/uploads/1/3/1/0/131069764/bbe440ee76.pdf
    • http://warufet.marianne-ward.com/uploads/1/3/0/8/130874588/993cca1.pdf
    • http://files.mareda.org/uploads/1/3/1/4/131437864/e27fb8854540.pdf
    • https://cdn.shopify.com/s/files/1/0440/5713/3221/files/rakelazalonunugalamagifu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vawis.pdf
    • https://cdn.shopify.com/s/files/1/0430/9434/3829/files/9429348900.pdf
    • https://cdn.shopify.com/s/files/1/0433/8574/9665/files/25864945495.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/18940753989.pdf
    • https://cdn.shopify.com/s/files/1/0431/6839/9524/files/sixunomesoj.pdf
    • https://cdn.shopify.com/s/files/1/0463/0288/8093/files/rakegekefetebut.pdf
    • https://cdn.shopify.com/s/files/1/0465/2426/8702/files/android_distribution_december_2018.pdf
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/52743372666.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/20417617525.pdf
    • https://cdn.shopify.com/s/files/1/0443/8809/0022/files/buffalo_dairy_farm_design.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_off0000427f.bin
7fefdc77f4a2af2ad80d2422a04e8436c1d02a9683da1a7fdd330f4ea9812d12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x427F 5452 bytes
font_01_sfnt_off000054fe.bin
de847ebd0cb1db0fbb308ed0b791b3d3121cbcbedc06c7fd518360cd9f6e996f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54FE 10004 bytes

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