Malicious PDF — malware analysis report

Static analysis result for SHA-256 8db961166f04aa0a…

MALICIOUS

PDF

87.3 KB Created: 2021-02-27 06:49:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 82c7f431ac0a454bdd39b15f32be6d46 SHA-1: aa1f31ba8c8866564885faa95e0285d5cd94486c SHA-256: 8db961166f04aa0a9cb716c8878c7ed78f39f40b05543ea242fa9bacb930d8ee
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URI heuristic suggest an attempt to trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/strik?utm_term=letra+cancion+yo+sin+tu+amor+camila PDF link annotation
    • https://cdn.sqhk.co/salobosemiv/fjcghfr/37650717945.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502567/normal_601da7c47422c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378393/normal_6000f97449816.pdfIn PDF document text
    • http://soluzixod.66ghz.com/grounded_theory_a_practical_guide_2015.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/hdgf192/70998129973.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/davawina/6734352208.pdfIn PDF document text
    • http://nidemavaguwagev.rf.gd/22720399239.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/sonicwall_analyzer_reporting_software_for_nsa.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/2020_amc_results.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/94586145035.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/house_of_leaves_introduction.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/xawevinosafuxodo.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/butenimojojifakezemor.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/organizational_change_powerpoint_template.pdfIn PDF document text
    • http://lufasojaweg.epizy.com/gagodizalakirulotezabega.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/ansys_maxwell_free_crack.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_off00011afc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AFC 4988 bytes
SHA-256: 2dce4d334b56aa9684b5bc86a39541cdcfe130bc8d6c41baa33f1e40e0ae7bdb
font_01_sfnt_off00012be7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BE7 10960 bytes
SHA-256: fbbfc344e838c382c970de0608782a21a9f78b45ad17d7987e507e5ddb0852de

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