Malicious PDF — malware analysis report

Static analysis result for SHA-256 26df3199d1ccf58b…

MALICIOUS

PDF

43.6 KB Created: 2020-08-26 12:45:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f74d8f5fc2043c28838f4311e4c9be8 SHA-1: 4e244da11f0fbc7b25c1188cc33976f7c48ae4bf SHA-256: 26df3199d1ccf58bce7a54f29280b684267560b2dc3253eb906e0176d2fc28f7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=free+survival+fiction'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The PDF also contains a link farm heuristic, indicating a large number of external links, many hosted on cdn.shopify.com, likely for SEO manipulation or 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=free+survival+fiction
    • http://files.jeffkahnsculpture.com/uploads/1/3/2/6/132681307/tazeda.pdf
    • http://files.jeffkahnsculpture.com/uplo
    • https://cdn.shopify.com/s/files/1/0437/6874/2040/files/28112223220.pdf
    • https://cdn.shopify.com/s/files/1/0433/0281/3849/files/roxulixevuwot.pdf
    • https://cdn.shopify.com/s/files/1/0461/9114/9214/files/gmetrix_word_2013_test_1_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/3513/1046/files/kizunuveporolez.pdf
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/60206860157.pdf
    • https://cdn.shopify.com/s/files/1/0432/0644/3176/files/38154572345.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9236/files/sokilaso.pdf
    • https://cdn.shopify.com/s/files/1/0437/8689/5522/files/chemistry_formulas_for_class_9_and_10.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/galova.pdf
    • https://cdn.shopify.com/s/files/1/0435/5869/9159/files/porupixiwonoxebofuwa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/99561288272.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27247465441.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_off00006dc7.bin
3db6321548761cc4716af1327bfeabb6841c13a9ff273f3bd71bc100c5aa9904		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC7 4888 bytes
font_01_sfnt_off00007e7e.bin
37e227bf8afd9567533cf952fefd1136af818850e34ea8b6ccd0c1a07158d55d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7E 10288 bytes

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