Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c38820c612e8785…

MALICIOUS

PDF

44.5 KB Created: 2020-04-14 23:16:11 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d10e8300f1273cccec5eafa5f126a960 SHA-1: 6297b2febec10a4390a6407d781a03ca4cee611a SHA-256: 6c38820c612e878577cb3c53bfa5cbbf2242da04947cbf2ecf2c91ece09d3631
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files hosted on similar domains, indicating a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, contains a URL that appears to be part of this scheme. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious link distribution attack.

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://thebestmanyoucanbe.com/uploads/1/3/0/9/130969628/130969628.html#tennessee+class+d+felony+sentencing+guidelines
    • http://optronics.us/uploads/1/3/1/4/131438323/6286726.pdf
    • http://rail66.net/uploads/1/3/0/4/130436121/pizigiboxunidaze.pdf
    • http://advertisewebsitebusiness.com/uploads/1/3/0/2/130270882/fovumoz.pdf
    • http://rashbiprayers.com/uploads/1/3/0/9/130969502/fexamigujekitupetaxa.pdf
    • http://my-pieces-online.com/uploads/1/3/0/5/130588286/913b27e77497.pdf
    • http://powerofgodinchrist.com/uploads/1/3/0/4/130488498/1c36162053.pdf
    • http://carllarosa.com/uploads/1/3/0/8/130814605/5857ed1a0de3c.pdf
    • http://redpalmclanwingchun.com/uploads/1/3/0/2/130288486/fowowupupixe.pdf
    • http://careingpaws.net/uploads/1/3/0/5/130588417/284a0458beac02.pdf
    • http://whitehousegroupaa.com/uploads/1/3/0/4/130476709/534aa13d267.pdf
    • http://jaychoi.ca/uploads/1/3/0/9/130969905/15549a45c.pdf
    • https://spag.es/2gJHnOF00
    • 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_off000084ae.bin
6e6505d4a60e76e59593a396c8aea59d2e547f5db976e7361a4be038137cb2ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84AE 8752 bytes

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