Malicious PDF — malware analysis report

Static analysis result for SHA-256 6293a89854665a60…

MALICIOUS

PDF

70.8 KB Created: 2021-02-15 21:13:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d5bac76e9356572c94005d952d53e020 SHA-1: eca896dd03cdb261af861cadb62c2fb0e809be65 SHA-256: 6293a89854665a60cdb884e8ae27c14d1bda5827626381e330726dbd80ccac4b
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to warranty information, aiming to trick users into clicking the malicious link.

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://jacksth.ru/strik?utm_term=how+long+is+a+carrier+furnace+under+warranty PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368758/normal_5fc62f34cf87e.pdfIn PDF document text
    • http://itdomen.fun/cheesecake_springform_pan_temperatureu09by.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482027/normal_600ae4431a865.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453902/normal_5fecf4149ec10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466175/normal_5ffe231ec2efb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379370/normal_5fc79d9ed37cc.pdfIn PDF document text
    • http://springital.fun/963514119205wxod.pdfIn PDF document text
    • https://cdn.sqhk.co/mofokamibe/bqjdhjd/word_blitz_tips.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458413/normal_601e658e2cc05.pdfIn PDF document text
    • http://vivadoctor.ru/spanish_composition_through_literatus5y7r.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/NjgAhcn/domaka.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sajonagot.rf.gd/6923133819.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/2130947694.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/depot_injection_administration_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_off0000d8e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E3 5344 bytes
SHA-256: 9b55d246d7bead27c358312bda4af2d5b8dd81bfe6ebad0dba2deee42da72697
font_01_sfnt_off0000eb3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3A 10184 bytes
SHA-256: c63a744cf6a98f9fa3fbe95d78531d60b6e7ec07811d4719e7693f4d01197416