Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6bf1092a868f87f…

MALICIOUS

PDF

40.0 KB Created: 2020-08-24 09:31:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80df2313a6ed81994a60420b492afca9 SHA-1: a1265e78b75d58af1236a818e23b469ddd3400d0 SHA-256: f6bf1092a868f87fbb963db13fc9a29a9f2eac0e6ab11c7576b5d07ad8b25b9b
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=finnegans+wake+piano+sheet+music'. This indicates the document is designed to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and several other unknown URLs that could be part of the distribution or payload delivery chain. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document.

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=finnegans+wake+piano+sheet+music
    • http://natazunaj.jolttherapytool.com/uploads/1/3/0/8/130814328/3714100.pdf
    • http://files.sadkaneaikidoschool.com/uploads/1/3/1/3/131379743/xibekusepuvapunaga.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/wolabeboguzovu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7307/7409/files/xaxudopekupadawelewep.pdf
    • https://cdn.shopify.com/s/files/1/0433/8361/9736/files/dibogazumikolinosuwakoja.pdf
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/aluminium_6061_thermal_properties.pdf
    • https://cdn.shopify.com/s/files/1/0439/7583/5806/files/simulador_ser_bachiller.pdf
    • https://cdn.shopify.com/s/files/1/0439/2170/3067/files/sofunimemifisosolirol.pdf
    • https://cdn.shopify.com/s/files/1/0431/2629/2634/files/83336233376.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/navy_seal_training_program.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nomevorijodasulalo.pdf
    • https://cdn.shopify.com/s/files/1/0439/3769/3851/files/62516152395.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/clopidogrel_bisulfate_plavix_davis.pdf
    • https://cdn.shopify.com/s/files/1/0435/1832/8991/files/45562757539.pdf
    • https://cdn.shopify.com/s/files/1/0436/1289/7437/files/91299214340.pdf
    • https://cdn.shopify.com/s/files/1/0432/6876/7907/files/cesarean_section_journal.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_off0000510e.bin
c4e3fc89a1afcdd4302f43cb2aaedaf5f923ddb646c419ffd934e6520881b1ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x510E 5328 bytes
font_01_sfnt_off00006324.bin
8f1de541284e3f306f939102989822beba39aeb33be12a68072bcf002797ac61
pdf-font-stream PDF embedded font (sfnt) at offset 0x6324 14436 bytes