Malicious PDF — malware analysis report

Static analysis result for SHA-256 595949354bf6079e…

MALICIOUS

PDF

44.6 KB Created: 2020-08-23 13:48:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54c166fd9a6bcf217d6d2e15ec5ad0d5 SHA-1: 95f77a764ad9a385fcb5ef414e10184c081b5cb0 SHA-256: 595949354bf6079ee9bb1c1e9516d9cfe8e14bc8e1f9c3c5a222f7c4221da934
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=dka+treatment+guidelines+2018+pdf'. The document body, though heavily obfuscated, contains references to DKA treatment guidelines and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the malicious destination. 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.com/pify?keyword=dka+treatment+guidelines+2018+pdf
    • http://wesiluwip.kashcraftmsn.com/uploads/1/3/0/8/130813528/a303439106ffc.pdf
    • http://budul.templemedsga.com/uploads/1/3/1/4/131453870/7869461.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0813/files/dovoniwujilobaba.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/65952776872.pdf
    • https://cdn.shopify.com/s/files/1/0430/2841/4618/files/lumuma.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63912397784.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/wedding_invitation_website_templates_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/84469756006.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20726054751.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/9375221038.pdf
    • https://cdn.shopify.com/s/files/1/0431/2150/8509/files/sum_of_interior_angles_of_triangles_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/7371/5880/files/xetawobokejopubiradugibu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7443/7791/files/kodijexoxejoma.pdf
    • https://cdn.shopify.com/s/files/1/0438/0029/7633/files/3865619373.pdf
    • https://cdn.shopify.com/s/files/1/0431/2888/1313/files/savage_garden_greatest_hits.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_off00006ecf.bin
aa52de1bf0c7a74b54a4864e54b490bc3df84ba6bef9f8c8632df9d96afce41b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECF 5944 bytes
font_01_sfnt_off000082fd.bin
1f1928eb20c93327077ae8ee6e3f742bfcca37427681aca5660dbd3d20488524		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82FD 10104 bytes

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