Malicious PDF — malware analysis report

Static analysis result for SHA-256 30f7af5004b56207…

MALICIOUS

PDF

39.3 KB Created: 2020-08-16 10:59:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 570291d4c1799f0800137e1eeb8dd1c5 SHA-1: 2fabb4e8d951a457ff18c02fe0e998bf3711e9a0 SHA-256: 30f7af5004b56207a05621c81f81965948bba8aa75e1f0978116df9d468815db
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, indicating a link farm. One critical heuristic firing identified a redirector link to 'ttraff.ru', which is known malicious infrastructure. The document body is heavily obfuscated and contains the same redirector URL, suggesting the primary purpose is to lure users 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=fibre+cement+roofing+sheet+suppliers
    • http://files.sculptingstudiopilates.com/uploads/1/3/2/3/132303099/3511089.pdf
    • http://newapig.syntheticephemera.com/uploads/1/3/0/8/130814017/2947833.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/kolakanufesuvefelet.pdf
    • https://cdn.shopify.com/s/files/1/0447/3012/2393/files/pobelazegejeneregonabe.pdf
    • https://cdn.shopify.com/s/files/1/0432/0457/5387/files/verudosolipamilekimaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/gezinutipesup.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/exploring_psychology_in_modules_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/osteomyelitis_treatment_guidelines_idsa.pdf
    • https://cdn.shopify.com/s/files/1/0435/5486/5320/files/waxawefapinozumiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/8522/5372/files/anything_goes_beaumont_script.pdf
    • https://cdn.shopify.com/s/files/1/0445/3302/2879/files/biblia_chomikuj.pdf
    • https://cdn.shopify.com/s/files/1/0429/4947/6518/files/16711887046.pdf
    • https://cdn.shopify.com/s/files/1/0432/9740/7126/files/22233572144.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_off00005b0d.bin
133df1ace6bbd0afbfadf466985c2ee377fe384cb78aeee2185da302dd93a4b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0D 5316 bytes
font_01_sfnt_off00006d00.bin
675cc73ca0a87b48972cc16db5ae79d35e39119bcea6409205ca5465adc2a985		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D00 10408 bytes

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