Malicious PDF — malware analysis report

Static analysis result for SHA-256 eec6a0885270441f…

MALICIOUS

PDF

35.4 KB Created: 2020-03-29 09:18:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 29201e8b753ef85a8ff5c23a85d1f64b SHA-1: d9d8684b93a3a250b634a28812078c010eb95121 SHA-256: eec6a0885270441f21adad6ed4e7a36c8a0bc92ccec7008ad975f71d4e2ab78a
96 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly flagged this PDF as malicious. The document body, though partially corrupted, contains a URL that appears to be a lure for technical support or product information, which is then followed by a large number of PDF links hosted on various domains, suggesting a link farm or redirection scheme.

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://74-123-77-77.mgwnet.com/uploads/1/3/1/4/131437531/131437531.html#pioneer+vsx+3300+no+sound
    • http://couturesewing.shop/uploads/1/3/0/9/130969973/7e9b715af.pdf
    • http://gentleman-door.com/uploads/1/3/0/6/130621481/tajemitol.pdf
    • http://www.brittanyoutdoors.com/uploads/1/3/0/2/130291592/pufulaxuzabuwusiw.pdf
    • http://www.parohia-kassel.de/uploads/1/3/0/6/130639023/3d39f492123.pdf
    • http://onlinewebcammodels.com/uploads/1/3/0/7/130776166/3547952.pdf
    • http://adventuristatravel.net/uploads/1/3/0/6/130603919/1136389.pdf
    • http://frfranksac.org/uploads/1/3/0/7/130739049/5374779.pdf
    • http://paddleboardz.com/uploads/1/3/0/7/130740612/rilutolaz.pdf
    • http://newmarlboroughfiber.org/uploads/1/3/0/6/130621897/4080476.pdf
    • http://www.karoolapark.com/uploads/1/3/0/5/130588299/6010917.pdf
    • http://stoneflowerlandworks.com/uploads/1/3/0/2/130270859/05fe0c033698dc.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005815.bin
1fedd2d63d74b9d7b69b1f7f259a5b220f6e6489fc49d601027832ed54ea25e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5815 7940 bytes
font_01_sfnt_off000076c7.bin
d8435aac11388b8214bfc980e857510ef47481ba706565f25bd6cae8efb01319		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C7 2828 bytes

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