Malicious PDF — malware analysis report

Static analysis result for SHA-256 37cd6d928e2961c6…

MALICIOUS

PDF

33.6 KB Created: 2020-08-20 21:41:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8407542a164c5950241ade95fbee243b SHA-1: 32e85141ca025230955e64865414790e44527a17 SHA-256: 37cd6d928e2961c6ac6e87d0d19c624f6d7e1172f454051f57ce9aac94849b15
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.ru/pify?keyword=barbie+twin+sheets+for+sale'. This indicates a phishing or scam attempt designed to redirect users to malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify-hosted PDF files, suggesting a link farm or content distribution network used to host lures. No scripts were extracted, limiting the analysis of further payload delivery.

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.ru/pify?keyword=barbie+twin+sheets+for+sale
    • http://babogofom.cjautotechs.com/uploads/1/3/0/7/130740235/12d39b9b4.pdf
    • http://files.hwollintherapy.com/uploads/1/3/1/0/131070313/kidafomol.pdf
    • http://files.hellewoodworks.com/uploads/1/3/1/1/131164152/97e26bbc3ff466.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/dabokupomujuvukab.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/21373888555.pdf
    • https://cdn.shopify.com/s/files/1/0430/0891/7657/files/lovazobamakanezofumos.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/mevogosutazozofiditofexuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/5943/0047/files/access_radgrid_edit_form_control_in_javascript.pdf
    • https://cdn.shopify.com/s/files/1/0435/7259/2801/files/wonotafekete.pdf
    • https://cdn.shopify.com/s/files/1/0435/5653/6479/files/bacterial_wilt_of_banana.pdf
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/72610745714.pdf
    • https://cdn.shopify.com/s/files/1/0436/0821/1619/files/93392334048.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/conditional_formatting_google_sheets_entire_column.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gerakofidasetivivirodipel.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_off0000487f.bin
d611217de9630cfb0e6c76c2d37639533052306be99d1b4051ff8ddc87a1ee58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x487F 5136 bytes
font_01_sfnt_off00005a02.bin
988f105fac4358835676efb347ba7e104dfe046362187fc896cb590d377b5044		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A02 9300 bytes

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