Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd8f19a56a919325…

MALICIOUS

PDF

34.0 KB Created: 2020-08-01 17:03:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6633a1ef4310462d3cd808ccc2839a92 SHA-1: 98cb42a51cf5b13cbe8dc22e74cd241399ac4316 SHA-256: fd8f19a56a91932526cb6f5e6a26935305ace64182da3b95a904f5ca377c47b8
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector at 'https://ttraff.ru/pify?keyword=dr+collins+pcat+pdf'. This indicates a phishing or redirection attempt. No scripts were extracted from this sample, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

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=dr+collins+pcat+pdf
    • http://files.windcatcherjewelry.com/uploads/1/3/0/9/130969054/2d8cc573269.pdf
    • http://files.alex-chien.com/uploads/1/3/1/4/131453267/a8b1e183d2085.pdf
    • http://files.artsforart.org/uploads/1/3/0/9/130970004/xobanifalododa-xuwojepo-govemubagem-xasasap.pdf
    • http://files.northwoodsspecialties.com/uploads/1/3/1/4/131409309/fatolutiv.pdf
    • http://files.themalagarden.com/uploads/1/3/2/6/132681443/5853605.pdf
    • https://cdn.shopify.com/s/files/1/0435/3762/9348/files/numusipi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8347/1771/files/90055708363.pdf
    • https://cdn.shopify.com/s/files/1/0434/0236/3045/files/vikodopotivu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/62243638411.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91489653134.pdf
    • https://cdn.shopify.com/s/files/1/0431/1462/7234/files/38752527371.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/81666959406.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6690/files/97894125303.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41877136991.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/64989875230.pdf
    • https://cdn.shopify.com/s/files/1/0437/0916/9815/files/vamatidemuwewizavi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5108/2143/files/15624247395.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_off00004754.bin
75425d4c28842703eab45751a160c53be8a516e92eea5d9020070085543deb7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4754 5148 bytes
font_01_sfnt_off000058ee.bin
6b73b78d2ba48e1d3ecdfb0043ebc04eca96bf7487c084b1eb03c5e815dc5a27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58EE 10076 bytes

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