Malicious PDF — malware analysis report

Static analysis result for SHA-256 1efc65a96d40f8d9…

MALICIOUS

PDF

44.0 KB Created: 2020-05-21 01:13:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 500cd434c7869eb1b35a52e041fe9d1c SHA-1: 6f0e1004c8ef3e43712fe1f84998c33485ec5e28 SHA-256: 1efc65a96d40f8d908557c661739be3ceab8616532e9039ba7b15f4c71778d74
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or distribution network. The document body, though partially corrupted, contains references to 'wkhtmltopdf' and 'Qt', indicating it was likely generated by a tool rather than being a legitimate document. The primary attack pattern observed is the redirection of users to potentially malicious external content through a dense network of links.

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://firstbaptistpound.com/uploads/1/3/0/8/130874523/130874523.html#fiche+de+lecture+de+candide
    • http://ortaremodelingservice.com/uploads/1/3/0/7/130775434/matejawelep.pdf
    • http://rasingbeautyholiday.com/uploads/1/3/0/4/130491444/e09552bee5bd9b.pdf
    • http://stlawncare.com/uploads/1/3/1/1/131164269/balip-musoma-danufoxakesol.pdf
    • http://aelmorris.com/uploads/1/3/0/7/130738821/senos.pdf
    • http://ajmcyprus.com/uploads/1/3/0/5/130588505/829530.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_off000078fd.bin
017decd5ad4d9762228d8852fa089f6be3341ee53b980db424b7bd2ffb558da9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78FD 14244 bytes

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