Malicious PDF — malware analysis report

Static analysis result for SHA-256 37ea3392e5183a54…

MALICIOUS

PDF

42.5 KB Created: 2020-07-30 12:51:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a11432c5f9a18f25d49a2f348b4bbaef SHA-1: 0fd48f907b539117d0734552849a6a4a6352f41f SHA-256: 37ea3392e5183a54ef95689a0988346fdb62e8870c87e701619762a6222b9684
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to medical information. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=fistula+perianal+pediatria+pdf
    • http://files.duboisstandardpoodles.com/uploads/1/3/1/3/131383698/bekiweja-rikewibez-kagalugak-gusipovojamizus.pdf
    • http://files.bahamianmom.com/uploads/1/3/0/7/130739652/50cf1c451fa8a.pdf
    • http://files.katascuba.com/uploads/1/3/1/4/131483253/5349126.pdf
    • https://cdn.shopify.com/s/files/1/0428/4373/4172/files/1693937765.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/gowukozuvop.pdf
    • https://cdn.shopify.com/s/files/1/0431/4411/8423/files/45424192900.pdf
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/20382858029.pdf
    • https://cdn.shopify.com/s/files/1/0428/8321/9619/files/21720715153.pdf
    • https://cdn.shopify.com/s/files/1/0438/3830/8512/files/divora.pdf
    • https://cdn.shopify.com/s/files/1/0437/5281/6798/files/vigov.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/58631955537.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8117/files/25463543250.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/
    • https://cdn.shopify.com/s/files/1/0431/4411/8423/fil

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a24.bin
0b674d7644c72a33b28104839fcfa4d8a36b45a29eb772d55bd83f2d3f4075f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A24 4760 bytes
font_01_sfnt_off00007a52.bin
a19408b196f84951147b99650881a96dda2ec32d3f536989856db6004bef12c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A52 10188 bytes

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