Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e9096e656bc6ace…

MALICIOUS

PDF

46.0 KB Created: 2020-08-29 01:38:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8f2a9ee4c4500b82f626bae63b47f78 SHA-1: 19272db9d3c4f537be62564e9aad6ce29a3880ee SHA-256: 2e9096e656bc6ace0fb238daa887f927c6e709ca55f156e3bbf298643b3f4cfb
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the same URL that is flagged as malicious. This suggests the primary purpose is to redirect the user to a harmful site, likely for further exploitation or phishing.

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/wix?keyword=crystal+reports+calculate+date+difference+in+days
    • https://cdn.shopify.com/s/files/1/0433/2729/1542/files/a_b_a-_b_identit_remarquable.pdf
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/koxixig.pdf
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/sugozuwojukipuwilapi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/test_1879eb6a-339e-4d45-a409-571cd94a4742.pdf?v=1594212285
    • https://static.usrfiles.com/ugd/b8c837_d9c380340e674d38b7994a786f2529dd.pdf
    • https://static.usrfiles.com/ugd/b8c837_f2933df0f45a4e1c93f0ae2af8fecf26.pdf
    • https://static.usrfiles.com/ugd/b8c837_babdc4933463447196e67db98e992f05.pdf
    • https://static.usrfiles.com/ugd/b8c837_0dbe673e0fad465ca3f6a0cec99cd676.pdf
    • https://static.usrfiles.com/ugd/b8c837_0419c8aeb5ec492f8cc11bcc2c441d79.pdf
    • https://cdn.shopify.com/s/files/1/0436/0939/1261/files/reduce_size_of_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/9304/1053/files/rrb_1099_r.pdf
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/employee_reference_letter_example.pdf
    • https://cdn.shopify.com/s/files/1/0438/0708/0610/files/piwunexameno.pdf
    • https://cdn.shopify.com/s/files/1/0432/5212/1762/files/rozifujediwoxavigukojilet.pdf
    • https://cdn.shopify.com/s/files/1/0429/7539/5993/files/noviwazunufogu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/nerve_growth_factors.pdf
    • https://cdn.shopify.com/s/files/1/0434/6616/2341/files/quadratic_equation_worksheet_grade_9.pdf
    • https://cdn.shopify.com/s/files/1/0440/5451/1766/files/40546341740.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_off0000730c.bin
839210849402192e0776cb9ca39ca7535e15d0d13d8437e5ad6e0622a2ff1e68
pdf-font-stream PDF embedded font (sfnt) at offset 0x730C 5156 bytes
font_01_sfnt_off000084ab.bin
b658fea28f824a0d9c9d0cebf2d3499ad156595261dbd80cc031be9123efaf22
pdf-font-stream PDF embedded font (sfnt) at offset 0x84AB 11076 bytes