Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fdd7f43b94f32cd…

MALICIOUS

PDF

41.2 KB Created: 2020-08-16 19:07:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 939ae077d268caea712eb845b2471f2b SHA-1: e88cba0fc731ca427ed784ce663ff2b7854637e7 SHA-256: 1fdd7f43b94f32cdf3bdb2697c5bb95dbe7dd508279eda99ee3ad36a77f18c42
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link and a link farm. The document body contains text related to 'Hip hop violin sheet music free' and a URL that redirects to a known malicious domain. This suggests a social engineering tactic to trick users into clicking the malicious link, likely leading to further malware download or exploitation.

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=hip+hop+violin+sheet+music+free
    • http://vulamo.idrha1.com/uploads/1/3/1/4/131483492/nusiborezodegawexiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/3902/2494/files/amlogic_usb_burning_tool.pdf
    • https://cdn.shopify.com/s/files/1/0434/3771/9717/files/grammar_translation_method_summary.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/company_swot_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0301/0459/files/accounting_and_bookkeeping_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0431/6754/7554/files/83172812663.pdf
    • https://cdn.shopify.com/s/files/1/0435/7763/9075/files/bexumoxemujexolonutij.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/nenuweserobexonanob.pdf
    • https://cdn.shopify.com/s/files/1/0429/1103/9655/files/dimension_breaker_guide.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_off000063d3.bin
6e21531d3da3d825452cc4a4ae575c5762794ab9d83d8f429f50b640a20e92c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63D3 5064 bytes
font_01_sfnt_off000074e4.bin
9c0074d0b28762ece3de9a9f361d5ec514e6218cfb9f702af5e3fb6d87556a84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E4 10472 bytes

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