Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec163f5d66e9ead…

MALICIOUS

PDF

45.1 KB Created: 2020-08-17 02:03:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b07b3c8147aa3d0de13a03aabbe4718c SHA-1: a26bd1e6dca3a2271e9fd9f3a5f6fad0861e159b SHA-256: 7ec163f5d66e9eadd19a55ac7c80ee1ee6d70fa6861c53c096b1359e9844bc23
150 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which point to a link farm hosted on Shopify. One prominent link directs to a known malicious redirector at 'ttraff.ru', disguised as a car rental contract template. This suggests a phishing or social engineering attack aimed at redirecting users to malicious content. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=car+rental+contract+template+uk
    • http://files.boudoirrougeburlesque.com/uploads/1/3/1/4/131452939/ponenerurotit.pdf
    • http://files.taylormadebling.com/uploads/1/3/0/7/130739069/270d2.pdf
    • http://files.taplejungegurungs.com/uploads/1/3/0/7/130775465/7130880eeb03b.pdf
    • http://files.shannonmora.com/uploads/1/3/1/4/131453065/lepekubajol.pdf
    • http://files.lineefraidsen.net/uploads/1/3/1/1/131163738/fewawuma.pdf
    • https://cdn.shopify.com/s/files/1/0433/0012/6885/files/the_pathophysiology_and_treatment_of_sepsis.pdf
    • https://cdn.shopify.com/s/files/1/0429/9577/7699/files/82018493807.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/37741671888.pdf
    • https://cdn.shopify.com/s/files/1/0429/5501/4297/files/fcc_bcc_hcp_crystal_structure.pdf
    • https://cdn.shopify.com/s/files/1/0431/1013/8017/files/7238837609.pdf
    • https://cdn.shopify.com/s/files/1/0435/0178/1158/files/tumem.pdf
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/zivanisedam.pdf
    • https://cdn.shopify.com/s/files/1/0430/3765/5191/files/3d_for_navisworks_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8333/files/vizolifod.pdf
    • https://cdn.shopify.com/s/files/1/0431/1495/4918/files/30177440824.pdf
    • https://cdn.shopify.com/s/files/1/0433/9567/8359/files/patent_ductus_arteriosus_management.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_off00006e28.bin
7c1c06f0f9041498b1e31d1554693c6bbf37b3b4c66a4a8390484cadb31f417f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E28 4872 bytes
font_01_sfnt_off00007e9d.bin
34b304c738961f182f24a1ffbea1ed69a0f041429e071d2d021926ff204dffbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E9D 12628 bytes

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