Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3cbce8d38e675b3…

MALICIOUS

PDF

44.8 KB Created: 2020-03-08 05:09:34 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9a1292f5ec281471d1964f09c224cefa SHA-1: d8d01101eaeace1c5f505ef8f11b17056dcef4f6 SHA-256: b3cbce8d38e675b3107dc4d8e8202a1b106f599d3179db37601cb2ea57e95299
92 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, a technique often used for SEO spam or to direct users to malicious sites. The ML classifier strongly indicated maliciousness. The primary attack pattern observed is the distribution of numerous links, with the intent to redirect users to potentially harmful content hosted on domains like 74-123-73-7.mgwnet.com and mindcoachnederland.nl.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://74-123-73-7.mgwnet.com/uploads/1/3/0/5/130540009/130540009.html#diy+modern+adirondack+chair+plans
    • http://mindcoachnederland.nl/uploads/1/3/0/5/130590384/6fa95ef5bea1.pdf
    • http://phillipragan.com/uploads/1/3/0/4/130477755/jodadikibiwuv-tejilasebidod-beduvu-jaravitogiwupur.pdf
    • http://www.goldiebrand.com/uploads/1/3/0/7/130775624/bolotokiko-detopipunev-nemujuz-kalit.pdf
    • http://vintagecityfinds.com/uploads/1/3/0/7/130739962/c39376254ee.pdf
    • http://adrianorchards1925.com/uploads/1/3/0/7/130775870/vekulesukod.pdf
    • http://manhatta2021.com/uploads/1/3/0/5/130541445/2320560.pdf
    • http://mirembegirlsvocationalcentre.com/uploads/1/3/0/7/130775475/bisonuwipuja_junaduruzozatu_fakuwo_ragajer.pdf
    • http://polarisbdgsystems.com/uploads/1/3/0/6/130639896/1600356.pdf
    • http://www.ejlifeonthemargins.com/uploads/1/3/0/8/130813736/xavonajusuxu.pdf
    • http://newworldhousemedia.net/uploads/1/3/0/3/130323214/2284593.pdf
    • http://saltlifepainting.com/uploads/1/3/0/3/130323229/nuzipaz.pdf
    • http://www.flawlessedinburgh.com/uploads/1/3/0/6/130620511/rulutizuzugedig.pdf
    • http://shearanch.com/uploads/1/3/0/7/130739824/pitofabele.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_off00008763.bin
01c7c4ff5ba0e1b1816b57695af699e5597e14ad67ea6fd105b5d1990d92c17f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8763 7912 bytes

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