Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebf714b3397f083a…

MALICIOUS

PDF

37.1 KB Created: 2020-04-22 06:28:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d6a865628f63bade9a7c442c892aeb2a SHA-1: c9aa0d023076a384f927e22e98203b5c49d9adb0 SHA-256: ebf714b3397f083a74df664dc1b54449573d2c740d05ab1687d34dd94c9fb40e
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file exhibits characteristics of a link farm, containing numerous external URIs pointing to other PDF documents. The ML classifier strongly indicates maliciousness. The primary attack pattern involves directing users to a large number of potentially malicious external links, likely for SEO poisoning 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://marikacleaningservice.com/uploads/1/3/1/4/131452972/131452972.html#barron%27+s+biology+sat+subject+test+pdf
    • http://property-insurancelawyer.com/uploads/1/3/0/6/130604740/lopal.pdf
    • http://getrollinpermits.com/uploads/1/3/0/5/130550703/7951833.pdf
    • http://collectivevisionsolutions.com/uploads/1/3/1/0/131071167/buvobuzafobaf.pdf
    • http://trophy-sunnyside.com/uploads/1/3/0/6/130640021/povuvike.pdf
    • http://moellerchiropractic.com/uploads/1/3/1/3/131380288/satibasi_nulel_nesosaviriru_bezafaruki.pdf
    • http://whitmoreeclectic.com/uploads/1/3/1/3/131384575/37315.pdf
    • http://springfieldprinting.net/uploads/1/3/0/5/130546040/54f65fda9f15.pdf
    • http://seattlesportshop.com/uploads/1/3/0/2/130272356/vibik_pazarobo_maroto.pdf
    • http://hard76.com/uploads/1/3/0/5/130588944/0f65871b562193.pdf
    • http://zjschoenhut.com/uploads/1/3/0/7/130739316/sevofefavoxigelimek.pdf
    • http://trinitymorrison.com/uploads/1/3/0/5/130588611/7785658.pdf
    • http://compassiongroupusa.org/uploads/1/3/1/6/131637186/wosavokinojif.pdf
    • http://blacktiemusic.com/uploads/1/3/1/3/131381722/kutekadotupevor.pdf
    • http://hachiyukihakuba.com/uploads/1/3/0/7/130775405/9897eef.pdf
    • http://hayflickos.com/uploads/1/3/1/4/131406813/5450038.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_off00006b9f.bin
8cd79163fdf2fa55bf72ca3260c02ca71451df22a7436ae34fbf2939069174aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9F 7252 bytes

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