Malicious PDF — malware analysis report

Static analysis result for SHA-256 32a5e67f5ef95271…

MALICIOUS

PDF

48.8 KB Created: 2020-07-30 15:34:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b720c366342da7cc55452d48ef5c583c SHA-1: fa567f0700a38a079ede8dc18d6340c6430a8efd SHA-256: 32a5e67f5ef9527169aa8cab06c14c55b5d352f61113f461266cf3991fcf712e
150 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'Antibacterial activity of turmeric pdf'. The presence of a link farm and a critical redirector heuristic strongly suggests a phishing or malware distribution attempt.

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.cc/pify?keyword=antibacterial+activity+of+turmeric+pdf
    • http://files.ethanrmarshall.com/uploads/1/3/1/3/131378899/lilami.pdf
    • http://files.pollardbros.com/uploads/1/3/2/8/132814071/8387069.pdf
    • http://files.amsphotographyllc.net/uploads/1/3/1/4/131453636/gaditumevugef.pdf
    • http://files.ethanrmarshall.com/u
    • https://cdn.shopify.com/s/files/1/0430/1294/8121/files/fujej.pdf
    • https://cdn.shopify.com/s/files/1/0440/7581/0966/files/xamoretujekapa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8032/6051/files/4365546456.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/xoziwu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/83798871824.pdf
    • https://cdn.shopify.com/s/files/1/0433/5622/5688/files/2354426550.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24413790208.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/46777996465.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75877947267.pdf
    • https://cdn.shopify.com/s/files/1/0432/6899/7288/files/batabimijive.pdf
    • https://cdn.shopify.com/s/files/1/0437/8116/1111/files/53203175781.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zosakasebiribo.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_off000080ca.bin
a98213335d64f32965006e4ca99e04c7a6ed70a89abfe66d90eda039556c5f90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80CA 5296 bytes
font_01_sfnt_off000092b2.bin
090d3c22358eab27059457e4e788415417bac4399c35e3302c9d7a0a9b0015fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92B2 10320 bytes

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