Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdb77712cf363522…

MALICIOUS

PDF

43.8 KB Created: 2020-08-03 23:15:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c065cdc68bc8df4ea10ff0aa4570956 SHA-1: ba34cc4ff929b7fe83f6ab7ada64dabad7518ecf SHA-256: fdb77712cf36352294b688663e58fd9cd55f77be492948072aa9beff08b10eea
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 firing indicating a malicious redirector. The document body, though partially corrupted, contains text suggesting it's a template, and the primary malicious URL is 'https://ttraff.cc/pify?keyword=tell+me+about+yourself+template+pdf'. This URL is likely used to redirect the user to a malicious site. The presence of many Shopify-hosted PDF links suggests a link farm or SEO poisoning attempt to obscure the malicious redirector.

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=tell+me+about+yourself+template+pdf
    • http://files.hannirosemindfulness.co.uk/uploads/1/3/2/3/132302987/1033280.pdf
    • http://files.confidance.com/uploads/1/3/1/6/131606016/edbfd1.pdf
    • http://files.solarpowereducation.com/uploads/1/3/0/7/130776589/110e975d199e.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18842325712.pdf
    • https://cdn.shopify.com/s/files/1/0430/7379/8298/files/funiledakum.pdf
    • https://cdn.shopify.com/s/files/1/0438/8657/5771/files/10869672894.pdf
    • https://cdn.shopify.com/s/files/1/0437/7994/8705/files/suwebugofumivoji.pdf
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/zofazopagawepopevelupa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jedufejaselikaruratemop.pdf
    • https://cdn.shopify.com/s/files/1/0430/3391/9645/files/jikupaged.pdf
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/berijevimikavumiwanizefe.pdf
    • https://cdn.shopify.com/s/files/1/0436/6457/2569/files/organic_chemistry_solomons_12th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0440/9711/0168/files/how_to_clear_weather_in_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baludugosutagaxoreforodul.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_off00006d4d.bin
1ecc3fa3475eae3bbb564497e418a37f4035bbf687d580d2a059ce23a6619cdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4D 5380 bytes
font_01_sfnt_off00007f7c.bin
ef84961ff9fa9b8e62facc19f9e94d6ba4ad0f16c91164ea2ebe2a6849c73cfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7C 10316 bytes

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