Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeaf67550df526b6…

MALICIOUS

PDF

59.5 KB Created: 2020-08-24 01:59:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 980ffe9b5ee078ed4b6143bda5855446 SHA-1: 2d523709b8e1de4c9bddfeb9ce33b8cc359e737a SHA-256: eeaf67550df526b669307cda32dcebcd89cd86fb13a97002937d045ac49b8c57
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'forced adoption support services operational guidelines' and includes the malicious URL, suggesting a social engineering lure. The presence of a malicious redirector link and the ML classifier's high confidence indicate a malicious intent to redirect the user to harmful content.

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.ru/pify?keyword=forced+adoption+support+services+operational+guidelines
    • http://files.ciphotoclub.com/uploads/1/3/0/8/130874026/relitijo.pdf
    • http://files.ksuhortnewsletter.org/uploads/1/3/1/4/131409305/repipufoguwixaxutow.pdf
    • http://files.heidiandlana.com/uploads/1/3/1/6/131637255/bupeguvapates.pdf
    • http://files.desmidtbuilders.com/uploads/1/3/0/7/130739330/3274354.pdf
    • http://dawug.udistrictmobility.com/uploads/1/3/0/7/130775918/9680298.pdf
    • https://cdn.shopify.com/s/files/1/0440/6139/3061/files/xemexepotolopunug.pdf
    • https://cdn.shopify.com/s/files/1/0430/1609/3849/files/zefipaba.pdf
    • https://cdn.shopify.com/s/files/1/0437/4613/2119/files/9007078672.pdf
    • https://cdn.shopify.com/s/files/1/0434/2723/3954/files/nenojexisodevelerig.pdf
    • https://cdn.shopify.com/s/files/1/0449/2718/9147/files/marketing_strategy_thesis.pdf
    • https://cdn.shopify.com/s/files/1/0432/2797/1741/files/8149818928.pdf
    • https://cdn.shopify.com/s/files/1/0429/1792/0934/files/62285852200.pdf
    • https://cdn.shopify.com/s/files/1/0440/6883/1382/files/blow_moulding_design_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4967/files/37719175104.pdf
    • https://cdn.shopify.com/s/files/1/0432/4986/0765/files/jilagupa.pdf
    • https://cdn.shopify.com/s/files/1/0428/5795/5487/files/65836350579.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_off0000ab59.bin
6d660f7cc7ec0ee88c61c3bd3d5d941971ccdd4cebedf30089228d25cd4413a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB59 5256 bytes
font_01_sfnt_off0000bd4b.bin
0f202bb51f2c080444d13903927203c31df60dd5ffb6e88802ff3813417b3e9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD4B 10256 bytes

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