Malicious PDF — malware analysis report

Static analysis result for SHA-256 e494c6f7a24c4dd7…

MALICIOUS

PDF

44.5 KB Created: 2020-08-05 01:20:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44d9512d73cfdac9da6ca13e37607667 SHA-1: c83323d4380771fcafc5419bacfcbb5be344072f SHA-256: e494c6f7a24c4dd711ef61457ff40a6c6022a19206c0d5f5cc9fb892ea867703
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on various domains, including multiple Shopify subdomains. The document body contains obfuscated text and a reference to the malicious URL, suggesting an attempt to disguise the malicious intent. The primary attack vector appears to be social engineering through deceptive links within the PDF.

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=bwv+1066+pdf
    • http://files.connectiveimpact.com/uploads/1/3/1/3/131379382/f8b5eb.pdf
    • http://popalek.northeast-home-inspections.com/uploads/1/3/0/7/130775934/6a11017eb.pdf
    • http://files.gumbogiftsandgallery.com/uploads/1/3/0/7/130738722/zalopupa.pdf
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/sunufomizodapusedere.pdf
    • https://cdn.shopify.com/s/files/1/0431/4900/0864/files/seismic_waves_activity_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.pdf
    • https://cdn.shopify.com/s/files/1/0431/0096/2967/files/weather_cape_girardeau_mo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6331/1513/files/movoxagewokarapux.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bixebor.pdf
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/vifawi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5265/2951/files/tetebavapalexesuwukujol.pdf
    • https://cdn.shopify.com/s/files/1/0433/8434/0630/files/71419443625.pdf
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/oral_hygiene_definition.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/luxafiwurilawosewunoresis.pdf
    • https://cdn.shopify.com/s/files/1/0436/4356/8278/files/clinical_pharmacy_roger_walker_download.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_off00006fc9.bin
6381204e242c80390a4feb348644dfc186461a690add551a6cf044de151990eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC9 5068 bytes
font_01_sfnt_off0000814b.bin
66c44da66f2c15165f64451bcff6f7738d673b84b1bd111140194248d4db6bca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x814B 10544 bytes

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