Malicious PDF — malware analysis report

Static analysis result for SHA-256 974e79609b2daae2…

MALICIOUS

PDF

69.0 KB Created: 2020-07-27 18:51:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf48c598c9f3b624f7c625633a901391 SHA-1: b04f3929fd358022d1750bc04e1af6744742a26b SHA-256: 974e79609b2daae293613c5a26d2e83cfdc296d21d074dc97a4cbed2938465ff
150 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, suggests a lure related to 'parasites'. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure, likely as part of a phishing or malware distribution campaign.

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/wb?keyword=par%C3%A1sitos%20intestinales%20pdf
    • http://files.sastinson.com/uploads/1/3/1/4/131452867/d434e0b887604.pdf
    • http://files.deepintheheartcrafting.com/uploads/1/3/2/6/132682542/jovegozarubite.pdf
    • http://files.juliehoy.com/uploads/1/3/2/6/132682048/womevobewe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1285/files/99474823277.pdf
    • https://cdn.shopify.com/s/files/1/0435/5221/1099/files/57626249404.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/57751604345.pdf
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/wipobimubomaxaka.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zijilo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5928/1061/files/rejexamutobozodor.pdf
    • https://cdn.shopify.com/s/files/1/0431/7036/5602/files/13150786737.pdf
    • https://cdn.shopify.com/s/files/1/0437/1238/1079/files/83722358347.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9730/files/weduw.pdf
    • https://cdn.shopify.com/s/files/1/0432/5123/7022/files/71934205230.pdf
    • https://cdn.shopify.com/s/files/1/0432/4599/4146/files/15528676564.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_off0000d062.bin
96dc1fe9465951f29803c68c2dd3acb87af4f289e995700a3377c95eea1bad96		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD062 5060 bytes
font_01_sfnt_off0000e107.bin
38bafcbc93b6dbd199b6c8e401f13159eaf197056f9a325f3b9ebc6095fa7c93		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE107 11000 bytes

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