Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec3262146cd70880…

MALICIOUS

PDF

43.7 KB Created: 2020-08-05 13:14:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 654dc5110de2a34a8d57925079da8ba1 SHA-1: bffa0dd7d29de0a645f49d6b6384eb86bd7714ad SHA-256: ec3262146cd70880b37bc4ccb4c4a185ed3c93bdb689ef6ecb2a7fd192e3a9ed
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL identified is https://ttraff.ru/pify?keyword=probability+equations+pdf. This suggests the document is designed to lure users to a malicious site, likely for further exploitation or phishing. No scripts were extracted, limiting the analysis of direct payload execution.

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=probability+equations+pdf
    • http://files.moldova-ministry.org/uploads/1/3/0/9/130969565/6972158.pdf
    • http://files.torahfun.us/uploads/1/3/2/6/132681698/ropagudefasulu.pdf
    • http://files.highquest.info/uploads/1/3/1/4/131410479/2222988.pdf
    • http://files.eastworship.org/uploads/1/3/0/7/130740412/jumorusuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2864/files/halo_glasslands.pdf
    • https://cdn.shopify.com/s/files/1/0432/1896/0541/files/42163731451.pdf
    • https://cdn.shopify.com/s/files/1/0435/8491/3565/files/sizanuputibenaxabobem.pdf
    • https://cdn.shopify.com/s/files/1/0432/2187/6900/files/68388064695.pdf
    • https://cdn.shopify.com/s/files/1/0437/1241/3851/files/2367950893.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/71751799630.pdf
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/bioremediation_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45035229099.pdf
    • https://cdn.shopify.com/s/files/1/0437/5235/8042/files/18171360892.pdf
    • https://cdn.shopify.com/s/files/1/0435/9425/2456/files/personal_budget_definition_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/72028702275.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f1d.bin
6986a266ac60a2d2cad1c1084b9e02950a875cc7ca646e1bc58595f797323918		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1D 5284 bytes
font_01_sfnt_off00007115.bin
c3d14b66ddc4e159085e29d6b3797f5cb352ef5ebf82a77a5a12a3f4b9e02788		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7115 10240 bytes
font_02_sfnt_off00009425.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9425 4324 bytes

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