Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe9bfbb5a447505b…

MALICIOUS

PDF

44.7 KB Created: 2020-08-27 19:11:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a420d10e8b0efe0ecf2cdf1b07e10f8b SHA-1: 70f6c7eb07545d9cb8ed1560a07b1526b23d9400 SHA-256: fe9bfbb5a447505b9d3206d1eb5753b2c906bab996b011c572d2029396de973e
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering through deceptive links within the document body, aiming to redirect users to malicious infrastructure.

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.cc/pify?keyword=motor+control+diagram
    • http://files.grandbendsoccer.ca/uploads/1/3/1/8/131871894/mirelukexuger.pdf
    • http://gofupuwa.bklynbooks.com/uploads/1/3/2/8/132814930/kuvevuvusuvefew_luwaluvijowixi_dezaxilopizedi.pdf
    • http://dukewajo.shannonsstudio.com/uploads/1/3/2/6/132683292/9128695.pdf
    • http://lesumare.lizzyemery.com/uploads/1/3/2/8/132814930/kuvomikefun.pdf
    • http://jerufu.pslcrazyquilters.org/uploads/1/3/0/7/130775405/5e9a8.pdf
    • https://cdn.shopify.com/s/files/1/0432/8488/9758/files/modojinurubojep.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/python_exponential_function.pdf
    • https://cdn.shopify.com/s/files/1/0440/1404/3294/files/business_manager_resume_sample.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58585016777.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/capitalismo_central_y_periferico.pdf
    • https://cdn.shopify.com/s/files/1/0435/7029/9048/files/bazovotikebulodofat.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdf
    • https://cdn.shopify.com/s/files/1/0437/5419/3047/files/editorsdepot._com_for_free_templates.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/coke_machine_parts.pdf
    • https://cdn.shopify.com/s/files/1/0433/0173/2520/files/photo_album_google_slides_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/9010/8833/files/86687525875.pdf
    • https://cdn.shopify.com/s/files/1/0430/3493/5447/files/webap.pdf
    • https://cdn.shopify.com/s/files/1/0451/1475/3189/files/learn_korean_book.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_off00007020.bin
35a9064eadb7bafc78727a98325fac8542e560d3d1cdf078cd929981463adaf8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7020 5084 bytes
font_01_sfnt_off00008156.bin
8d345ffc52c34101182ad2e5e55c72515d284850e380aa05d109d84c04522c13
pdf-font-stream PDF embedded font (sfnt) at offset 0x8156 10664 bytes