Malicious PDF — malware analysis report

Static analysis result for SHA-256 cce195cd0422720c…

MALICIOUS

PDF

33.0 KB Created: 2020-08-23 04:54:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8acf31145c8106ebc80b4821c5f9eea3 SHA-1: 5e7d18ff51a160d2779bd4eb7ccfb80cbcbb9cb6 SHA-256: cce195cd0422720c7f8a3522082947d51b40d0f8b2bb711c53824303478857d5
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=export+3d+pdf+navisworks'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify-hosted PDF links, suggesting a lure to a malicious site disguised as a technical document.

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=export+3d+pdf+navisworks
    • http://files.coramakes.com/uploads/1/3/1/0/131070434/jonomafofoveluj.pdf
    • http://files.carlfismer.com/uploads/1/3/1/1/131164236/9192788.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/87666705820.pdf
    • https://cdn.shopify.com/s/files/1/0431/9087/8372/files/biocalculus_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/jafekinivi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6866/0643/files/zudalonabutoremox.pdf
    • https://cdn.shopify.com/s/files/1/0431/0640/2453/files/38398929232.pdf
    • https://cdn.shopify.com/s/files/1/0434/0485/3402/files/sabomovenewe.pdf
    • https://cdn.shopify.com/s/files/1/0433/8368/5270/files/74871687877.pdf
    • https://cdn.shopify.com/s/files/1/0432/7574/7484/files/zexex.pdf
    • https://cdn.shopify.com/s/files/1/0431/7678/8117/files/polipaxuxejapowufu.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_off0000444c.bin
a6f06370c6695796c8660a89209cd03be5e39b46ac1dde37ee3e64d20eeaca7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x444C 5408 bytes
font_01_sfnt_off000056e2.bin
cc8a07f5a361a6ca02588458e9a1627c4f11cffbe03ffefa40fce6435f93ef13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56E2 9452 bytes

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