Malicious PDF — malware analysis report

Static analysis result for SHA-256 22f0a9fdb54d332e…

MALICIOUS

PDF

33.9 KB Created: 2020-04-11 07:28:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e93c18135eb19d839951b5a788650b81 SHA-1: c4a04bb4e5c93605594db11a7c43a2f6a13b34e0 SHA-256: 22f0a9fdb54d332eb0267c8da0d6dfdf44c95d189daba4592c4475f995c55f93
96 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information T1204 Malicious Link

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, many of which appear to be part of a link farm designed to manipulate search engine results or serve as a distribution point for malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://nobuhotelshoreditch.devsite-1.com/uploads/1/3/0/3/130379843/130379843.html#maquina+de+costura+singer+facilita+pro+4423+como+usar
    • http://mycheckride.com/uploads/1/3/0/6/130603715/gujakusax.pdf
    • http://myafrikaranch.com/uploads/1/3/0/7/130776536/be56b3365fb3.pdf
    • http://deconstrictingfilms.com/uploads/1/3/0/7/130776474/pefijizolozomo_jaxozavivelu.pdf
    • http://abogadoslaboralespr.com/uploads/1/3/0/7/130775544/8467394.pdf
    • http://lewisandclarkriverboat.org/uploads/1/3/1/4/131437656/aaabf.pdf
    • http://crowntravels.net/uploads/1/3/0/4/130476040/4486457.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_off0000590c.bin
d6684c29f80d05ab876f4d3dcfabbf0f3260ce7211b415022d6860196f966555		 pdf-font-stream PDF embedded font (sfnt) at offset 0x590C 9680 bytes

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