Malicious PDF — malware analysis report

Static analysis result for SHA-256 44fdc68edb278dc0…

MALICIOUS

PDF

36.0 KB Created: 2020-05-19 08:58:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 139bbc6e33a739f8ee5f39a84635dcef SHA-1: f5b58fcc27d84c4cad9fe5b282698d9846feb9de SHA-256: 44fdc68edb278dc01a30cfdbfefb375b302b010cfe2a736c32c1e4d89b54d0bb
94 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm, containing numerous external URLs pointing to various domains. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a potential attempt to manipulate search engine results or redirect users to malicious content. The presence of many similar-looking URLs suggests a coordinated effort to distribute potentially harmful links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://grupoforrajeroxalos.net/uploads/1/3/0/5/130543170/130543170.html#age+of+empires+2+rotate+gate
    • http://meetgeneinkeywest.com/uploads/1/3/0/5/130550912/6b098ea217c79.pdf
    • http://pleasantoneducation.org/uploads/1/3/0/6/130603859/8439025.pdf
    • http://iepainting.org/uploads/1/3/0/2/130288447/xapalenarepun-fubisizefe.pdf
    • http://produceractivitygroup.com/uploads/1/3/1/3/131379959/2054237.pdf
    • http://shoekingexclusive.com/uploads/1/3/1/0/131070490/6037589.pdf
    • http://justalittlebitecookingcompany.com/uploads/1/3/1/3/131384229/rikinemom.pdf
    • http://terracorprealestateservices.com/uploads/1/3/0/3/130323479/34b3173450485d6.pdf
    • http://anovabh.com/uploads/1/3/1/4/131453522/01e81b.pdf
    • http://dinsdalerealtyllc.com/uploads/1/3/0/3/130313343/sofibosasiso_tutem_naseveniru_wujolisa.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_off00006094.bin
51f3a8c1f5f5f78c5e2400dcf475cd6eaf61a53e8f4658203c6e569ca796b239		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6094 10756 bytes

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