Malicious PDF — malware analysis report

Static analysis result for SHA-256 b59a50360d798e39…

MALICIOUS

PDF

42.3 KB Created: 2020-08-20 20:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0039781ebbb1b6daaa903ab714d94a9 SHA-1: 87ea0b7e0cf54950ea1f49f4f046165a79a98834 SHA-256: b59a50360d798e390811a0f5a7ee90be1a7f5be99abc48e6c113e547ee275537
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or social engineering attempt. The primary malicious link is https://ttraff.com/pify?keyword=high+rise+condominium+design+guidelines, which likely leads to a malicious payload. The document body, though heavily obfuscated, contains references to design guidelines, suggesting a lure to entice users to click the malicious link.

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.com/pify?keyword=high+rise+condominium+design+guidelines
    • http://files.goldcountry-realestate.com/uploads/1/3/2/7/132710628/2032265.pdf
    • http://perus.voodoochameleon.com/uploads/1/3/1/1/131163667/7000332.pdf
    • https://cdn.shopify.com/s/files/1/0433/1778/8830/files/gofajalirakanowigog.pdf
    • https://cdn.shopify.com/s/files/1/0434/5852/7397/files/561838324.pdf
    • https://cdn.shopify.com/s/files/1/0434/2880/6806/files/ccat_test_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/83189967517.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/vuwobagolumi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6472/9512/files/57911533666.pdf
    • https://cdn.shopify.com/s/files/1/0432/2577/6288/files/zulinoda.pdf
    • https://cdn.shopify.com/s/files/1/0461/5697/2195/files/margosa_leaves_information.pdf
    • https://cdn.shopify.com/s/files/1/0429/5353/9747/files/firomezajanijir.pdf
    • https://cdn.shopify.com/s/files/1/0430/7720/6167/files/reduction_formula_integration_by_parts.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_off00006a05.bin
f0373c6a0a7b9147a1d0335d2063e2209769bc1a1062a7fb424035c1f821bc93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A05 5104 bytes
font_01_sfnt_off00007b2e.bin
a0e02b2c7266ae5eb889296d62a226aa7db2afe54606c92ae2d8fb67b343cc4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2E 9796 bytes

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