Malicious PDF — malware analysis report

Static analysis result for SHA-256 06cb4a0f49d86829…

MALICIOUS

PDF

70.2 KB Created: 2021-02-17 07:21:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 69ca793235b1df8d061457b07458ddf2 SHA-1: 212b0446388b0bcd9762dcd77577114af07b26c5 SHA-256: 06cb4a0f49d8682904c791a17646b54311625a980c1c5d9f0d48b025f3c41d46
184 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=harry+potter+and+the+chamber+of+secrets+book+back+cover In PDF document text
    • http://najaruwa.iblogger.org/faziriwel.pdfIn PDF document text
    • http://nextauto02.ru/marvellous_techniques_for_ielts_writingq8ti4.pdfIn PDF document text
    • http://wavoxibex.iblogger.org/eyewitness_weather_video_worksheet.pdfIn PDF document text
    • http://gijixig.22web.org/gimelajejabafigusedej.pdfIn PDF document text
    • https://cdn.sqhk.co/wexufenu/ijik1KF/9750667290.pdfIn PDF document text
    • http://papasewavixuk.22web.org/farmout_agreement_template.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/jc5Bhgj/3583718656.pdfIn PDF document text
    • http://e-devletodeme.net/trnsys_manual1jdgq.pdfIn PDF document text
    • http://0fruit.space/eccentrically_loaded_isolated_footingpvecr.pdfIn PDF document text
    • http://jevetimunuz.iblogger.org/gigokukokovezewipum.pdfIn PDF document text
    • http://dom-bita.org/menggabungkan_file_menjadi_satumb5dc.pdfIn PDF document text
    • http://crubr.space/surufutejatopuxuwidu56v87.pdfIn PDF document text
    • http://noncomform.space/fexikixipawefodakap3wv8m.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wumuduwowuwi.rf.gd/38645067954.pdfIn PDF document text
    • http://sotemapepuko.epizy.com/coronary_calcium_score_guidelines.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_off0000d5d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D6 5688 bytes
SHA-256: a9e51edd45037d3ac353057d7990cce6c4d1a6c4b0bda2dc39004c9955b2dc4b
font_01_sfnt_off0000e90d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE90D 10056 bytes
SHA-256: 4fa74f29cfa3da751f714cf67948e7c5529ed9469179f2c404a4928d006e6809