Malicious PDF — malware analysis report

Static analysis result for SHA-256 a178a68eaa15e51b…

MALICIOUS

PDF

42.1 KB Created: 2020-08-18 23:18:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41b2dda8d1ca80467b9b1514d9a291bf SHA-1: 34cbeea9ae7236928aa65c5eaa972d6f6d8b5e57 SHA-256: a178a68eaa15e51bc7143379ed14bc3194c9ea2a861793a1542399d5d81b44f8
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same malicious URL and appears to be a lure related to a 'wow cataclysm fishing leveling guide'. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, suggesting a tactic to distribute malicious content or engage in SEO manipulation. The primary malicious IOC is the redirector URL.

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=wow+cataclysm+fishing+leveling+guide+1-+525
    • http://files.millhouseconsultants.com/uploads/1/3/1/4/131406592/xufitigajibikuro.pdf
    • http://files.cassandraneuhauspsyd.com/uploads/1/3/0/7/130739112/2c48e.pdf
    • http://files.urbanwildcalgary.ca/uploads/1/3/1/8/131856162/9908146.pdf
    • https://cdn.shopify.com/s/files/1/0436/3390/1726/files/the_creative_teaching_and_learning_resource_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/6249/3345/files/24118418107.pdf
    • https://cdn.shopify.com/s/files/1/0431/3799/0805/files/arthritis_diet_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/32125063523.pdf
    • https://cdn.shopify.com/s/files/1/0440/2007/2613/files/gopexoduf.pdf
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/93452202702.pdf
    • https://cdn.shopify.com/s/files/1/0440/0647/3886/files/remove_git_from_folder.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lozafawofife.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_off00006486.bin
797f08f95571e74389660861cbab5db339d91f560eeeb220d2a2ca6df466a119		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6486 5948 bytes
font_01_sfnt_off000078d4.bin
94e732dd3e63289f7e2c4a7e70dfb703ff52aa4a0d78e0da4ec5d0e076f6dbf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78D4 10224 bytes

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