Malicious PDF — malware analysis report

Static analysis result for SHA-256 bde67e35d3e72f95…

MALICIOUS

PDF

99.4 KB Created: 2020-08-06 13:35:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 943d47181ef44928e774f57fc50529cf SHA-1: 57147364e98f3dc3b2997728f4da1a14ce959de6 SHA-256: bde67e35d3e72f95a129243cf596bcc2516901829ca91bdc59e7310b343ad931
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=advt+12+2020+hssc+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0431/2940/5600/files/rumadivizurokegi.pdf'. The document body, though heavily obfuscated, contains the redirector URL, suggesting the primary intent is to lure the user to a malicious site.

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=advt+12+2020+hssc+pdf
    • http://files.stjohnlutheransherburn.org/uploads/1/3/2/6/132680905/6dde9c0.pdf
    • http://welilan.vbptandwellness.com/uploads/1/3/2/8/132816066/86a6388f.pdf
    • http://files.vaniteevogue.com/uploads/1/3/0/7/130775331/1834747.pdf
    • http://files.olof.waggamatters.com/uploads/1/3/1/4/131408930/nuwanader_wokuxejobonun_dikedopeje.pdf
    • http://files.spalebrity.com/uploads/1/3/1/4/131406518/9810445.pdf
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/rumadivizurokegi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5283/3695/files/nusav.pdf
    • https://cdn.shopify.com/s/files/1/0427/6905/5911/files/7037471346.pdf
    • https://cdn.shopify.com/s/files/1/0440/1335/5166/files/devawiwoxetuvir.pdf
    • https://cdn.shopify.com/s/files/1/0430/9588/3925/files/29410793701.pdf
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/83752528274.pdf
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/zuvezatiwewesukorulafe.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9292/files/kewefatofobuvepalanumuku.pdf
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/24100832125.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_off00013e6e.bin
ff6b05f327e0792e40c6243507179b7cd7d599fe89d2c59c1e3fb35a62d96c16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E6E 5280 bytes
font_01_sfnt_off00015080.bin
6f57d645e7b82daa769e49cedbeb066d810e1983c0b45e3a8edfdc6bd6bc2cd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15080 15588 bytes

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