Malicious PDF — malware analysis report

Static analysis result for SHA-256 9933c7ca1470d1bd…

MALICIOUS

PDF

103.0 KB Created: 2021-02-26 13:54:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e956d4e7fd4ffb5bd67bc20568004b01 SHA-1: d9d039f56eab4765216e752e264e076587fb07cb SHA-256: 9933c7ca1470d1bd9655f8a2d6dd61927a8448762ae1126530a855f2d7b0ce02
126 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://soxebez.ru/strik?utm_term=what+is+the+major+difference+between+eastern+and+western+philosophy PDF link annotation
    • http://dotasif.iblogger.org/academic_poster_design_template.pdfIn PDF document text
    • http://bavomobes.22web.org/luzolozijitamete.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/9hicgdC/spray_fast_stencil_arte.pdfIn PDF document text
    • http://wumewil.sportsontheweb.net/70939990542.pdfIn PDF document text
    • http://lamaded.mywebcommunity.org/is_sony_rx10_iv_full_frame.pdfIn PDF document text
    • https://cdn.sqhk.co/xewimoziwuvo/idhhAXx/56665993722.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/Mhaiijj/xanamegu.pdfIn PDF document text
    • http://zajevafegex.iblogger.org/siwekapirofol.pdfIn PDF document text
    • http://bifilazona.22web.org/65704479571.pdfIn PDF document text
    • http://xopijodujakik.22web.org/e2_trunnion_hitch_installation.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zopijejezi.rf.gd/california_deposition_objections_list.pdfIn PDF document text
    • http://kunitugi.rf.gd/57584606082.pdfIn PDF document text
    • http://xadeboni.epizy.com/9514263495.pdfIn PDF document text
    • http://nedomawof.rf.gd/academic_performance_stress_survey_questionnaire.pdfIn PDF document text
    • http://lozadubevapoke.epizy.com/video_adit_sopo_jarwo_2018.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15427 5820 bytes
SHA-256: 0cac3f53df4109d5f70e695742e7304070808b4087b9f974cef4e8e7bd51840d
font_01_sfnt_off000167ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x167EC 11208 bytes
SHA-256: 8ea18575a78566125f622a3f8af3af30e8f3ad8c56408c18d65d8829cfdeb06e

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