Malicious PDF — malware analysis report

Static analysis result for SHA-256 f750905a34e6b8f7…

MALICIOUS

PDF

50.5 KB Created: 2020-09-09 17:14:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00ef27544dd6347517cccbe16f282644 SHA-1: 547faaa71c4f8d0bc3b78337a418368c98ce5aad SHA-256: f750905a34e6b8f7d06a31a145feab9572330c865bb8395441027f9812e4f022
150 Risk Score

Malware Insights

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

The PDF file contains a lure related to a 'risk assessment management plan template for schools'. It exhibits critical heuristic firings for malicious redirector links and a PDF link farm, indicating a distribution mechanism for further malicious content. The primary malicious URL identified is https://ttraff.link/wix?keyword=risk+assessment+management+plan+template+for+schools, which likely serves as a redirector to other malicious sites or files.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.link/wix?keyword=risk+assessment+management+plan+template+for+schools
    • http://dusekat.sheisblankspace.com/uploads/1/3/1/6/131637814/8dd85f1b78.pdf
    • http://files.growapes.com/uploads/1/3/1/3/131378950/98d739bc7c03a.pdf
    • http://tekoxinif.insulators41.com/uploads/1/3/0/7/130740069/b20773dc9cb716f.pdf
    • https://static.usrfiles.com/ugd/dcc11b_526516211d3549868203178790189883.pdf
    • https://static.usrfiles.com/ugd/b8c837_5e8e1677c4d24c3b96da265f62ba50d6.pdf
    • https://static.usrfiles.com/ugd/f5892c_e19d7ef4a6e34bbba4a146af09d952eb.pdf
    • https://static.usrfiles.com/ugd/5f226b_4b7f0f443d1948ef87abaf7bf22e7090.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/44921264136.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/apes_frq_2015.pdf
    • https://static.usrfiles.com/ugd/15d534_e3c83e3b39d246faa22a99262620e35e.pdf
    • https://static.usrfiles.com/ugd/09c3c7_036f4f62cacd49efa132d00f2400a5bf.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_off00008799.bin
ae84878c5a5c7e46997389c3997751dcfd318710b0f8f17a623e27392ac7b91d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8799 5500 bytes
font_01_sfnt_off00009a33.bin
4bb4a1df2aaae29015d9e7025e66dfb5601804f5129746f7203b91f39ef0a22c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A33 10088 bytes

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