Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ea48924b34ebd1c…

MALICIOUS

PDF

53.4 KB Created: 2020-03-07 20:38:07 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: cef604e18c75a38efc9734fb2895dfb3 SHA-1: 85a125d2d610035cede489509cdc2a2b24436156 SHA-256: 6ea48924b34ebd1cb4fabb31269d5171d369e39d90df4175cfad24e5845fe23e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, a common tactic for link farms or phishing campaigns. The ML classifier strongly indicated maliciousness, and the PDF structure suggests it's designed to host a large number of external links, likely for SEO manipulation or to distribute malicious content. No scripts were extracted, but the sheer volume of external links points to a malicious intent to redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://3ljmr.bpmtc.com/uploads/1/3/0/8/130814874/130814874.html#stairway+to+heaven+guitar+solo+tab
    • http://nolausedcars.com/uploads/1/3/0/3/130313434/9642821.pdf
    • http://alittleoutthere.com/uploads/1/3/0/5/130588674/mavipasaj-nopujodonunib-saregopi-ditutosojow.pdf
    • http://mta-sts.equill.de/uploads/1/3/0/6/130604872/wupagugi.pdf
    • http://lanzalillieproperty.com/uploads/1/3/0/4/130483153/95552da.pdf
    • http://neuropathydrprofessionals.com/uploads/1/3/0/7/130740045/nivunijobipesipora.pdf
    • http://www.imos-pizza.com/uploads/1/3/0/5/130588459/remexipemukek-pitufadaxo-pebotelosekit.pdf
    • http://newlifesdaoh.org/uploads/1/3/0/6/130639767/bce589c.pdf
    • http://tristandressler.com/uploads/1/3/0/2/130288394/diwopiz-vaxolarewanu-jojen.pdf
    • http://eastoffiveboutique.com/uploads/1/3/0/6/130604333/waxolulonu.pdf
    • http://amurdc.com/uploads/1/3/0/7/130739389/fazitumowexupebemeto.pdf
    • http://lottewillems.be/uploads/1/3/0/7/130739786/8591754.pdf
    • http://aesriskmgt.com/uploads/1/3/0/7/130739002/7425278.pdf
    • http://juliespetsittingdogwalking.org/uploads/1/3/0/5/130545753/vubegeja-jixipakafidinok.pdf
    • http://mk3basketballclinics.com/uploads/1/3/0/5/130589249/5633773.pdf
    • http://www.carried-on.com/uploads/1/3/0/6/130603939/malalekatowemigigi.pdf
    • http://cpanel.burleybridge.com/uploads/1/3/0/7/130739816/binifemenodag.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_off0000a739.bin
7efd492e195c38bf540451066eeae9e55285e50436695a23871b9a990553bc45		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA739 8716 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.