Malicious PDF — malware analysis report

Static analysis result for SHA-256 46a307b32009065a…

MALICIOUS

PDF

44.5 KB Created: 2020-04-06 03:54:37 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0264f630774906c10fcef6221d1e8146 SHA-1: 4c14f7b56ca386e9ccdabd1b6472c895632bf2aa SHA-256: 46a307b32009065ac5d5db52d20907b6ffcc36ab1513367fe29dff48fe073a48
92 Risk Score

Malware Insights

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

The PDF file was identified as malicious by an ML classifier. It contains a large number of external links, a technique often used to distribute further malware or lead users to phishing sites. The document body itself is minimal, but the presence of numerous links to PDF files on unrelated domains suggests a link farm or redirection scheme. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://datacenterhitec.org/uploads/1/3/1/4/131406841/131406841.html#13+reglas+de+composicion+fotografica+que+debes+conocer
    • http://annienisio.com/uploads/1/3/0/6/130622022/losujonusub.pdf
    • http://lincolnspencer.info/uploads/1/3/0/4/130476351/sowonojevarovenaz.pdf
    • http://wellfitforlife.com/uploads/1/3/0/6/130604566/pagetak_sorosuf.pdf
    • http://primeyecare.net/uploads/1/3/0/2/130287875/8334414.pdf
    • http://buildabettie.com/uploads/1/3/0/8/130874510/2705678.pdf
    • http://99centsappstore.com/uploads/1/3/1/1/131164366/gabonifidaloxurop.pdf
    • http://trails4tailsfest.net/uploads/1/3/0/4/130476564/2db3c6.pdf
    • http://golfadventureskenya.com/uploads/1/3/0/5/130543682/3aff51866.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082e4.bin
2828119ab9098c008c3f9789d185fab9c329218961300c5ec77af2ec97586b97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82E4 8844 bytes

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