Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffecedf5b84f266f…

MALICIOUS

PDF

41.7 KB Created: 2020-05-31 17:18:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57fc53aa30f81221079fe65da69988af SHA-1: 608f6fde49257975ec9451abdf815f5e1e6e28fa SHA-256: ffecedf5b84f266f63583952a6a3ffcfb333d5449ef0afb20d0d53acf2392643
62 Risk Score

Malware Insights

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

The PDF file contains multiple heuristics indicating it is part of a link farm designed to direct users to external websites. Specifically, the PDF_SEO_LINK_FARM heuristic fired, along with PDF_URI and EMBEDDED_URL, pointing to a suspicious URL. The document body, though heavily obfuscated, contains the string 'Were the millers torrent' and the suspicious URL, suggesting a lure to a potentially malicious site.

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://murryabstractart.com/uploads/1/3/1/1/131164164/131164164.html#were+the+millers+torrent
    • https://zadidepetox.files.wordpress.com/2020/05/jofejitav.pdf
    • https://saguwer.files.wordpress.com/2020/05/19908105339.pdf
    • https://podinerexine.files.wordpress.com/2020/05/54339138029.pdf
    • https://netigosod285927460.files.wordpress.com/2020/05/63367875972.pdf
    • https://tegedow.files.wordpress.com/2020/05/76733291588.pdf
    • https://bikixaxapu55491205.files.wordpress.com/2020/05/45162787605.pdf
    • https://fatafujuk.files.wordpress.com/2020/05/pukorixomivodovukorobewe.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_off000077c0.bin
b552d2e3b8f5895b51fcb56d74cf218bd68887051dedc664c7aa692dd92ce211		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C0 10792 bytes

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