Malicious PDF — malware analysis report

Static analysis result for SHA-256 176fc0c0961286ee…

MALICIOUS

PDF

38.5 KB Created: 2020-03-09 04:14:52 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 727d416c2684afb50b406a9176dc2c95 SHA-1: 3dbbda78f2dd4ad42551273d2634795cdb513182 SHA-256: 176fc0c0961286ee671f986aed3bac2cbe7d631f3889e01e501ecc3885a9ac3f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body, though partially corrupted, contains text related to 'Affairscloud weekly quiz 2019' and includes a primary URL that also leads to a quiz-related page. This suggests the document is designed to drive traffic to these external sites, likely for SEO spam or to host further malicious content.

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://hinterlandtreeservicesbyronbay.com/uploads/1/3/0/6/130604195/130604195.html#affairscloud+weekly+quiz+2019
    • http://www.stiquor.com/uploads/1/3/0/2/130271058/xikurozevoma_jezejodupotar.pdf
    • http://caninerehabpartners.com/uploads/1/3/0/5/130589006/5374307.pdf
    • http://wildenco.com/uploads/1/3/0/3/130379423/472221.pdf
    • http://patchapple.com/uploads/1/3/0/5/130589397/bujume.pdf
    • http://witchsrosary.com/uploads/1/3/0/2/130270914/tupiroxosojisi.pdf
    • http://www.itabiowa.com/uploads/1/3/0/5/130589381/7519520.pdf
    • http://paintingbyjanie.com/uploads/1/3/0/7/130739696/juxuvipusopukil-nuwuzelafesuti-sirufifetataz.pdf
    • http://lacefullwigs.com/uploads/1/3/0/5/130551094/de062d7.pdf
    • http://hausofbrews.org/uploads/1/3/0/7/130740196/948115ff0f96971.pdf
    • http://www.jayrosetravels.com/uploads/1/3/0/2/130288381/7346155.pdf
    • http://bigdatahq.com/uploads/1/3/0/3/130313106/e12b473e.pdf
    • http://kaimanacreations.net/uploads/1/3/0/6/130620505/1975250.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_off00006bb8.bin
bce4ade92870d5fcc204efbd8e00952a93d677c5185d917bb953d630be04a9b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB8 8284 bytes

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