Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6515b92723989b2…

MALICIOUS

PDF

70.4 KB Created: 2021-02-26 14:29:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 36a490db518ac321d0eb159bff429b60 SHA-1: 9a1bb86ab689803a9b58230419ba0c0953ed9309 SHA-256: d6515b92723989b23b4d2d7d4c54f6516c7b00ceb7a42b7109d506845f1c67f8
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'resalured.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, suggests a lure related to a movie download, aligning with common social engineering tactics.

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://resalured.ru/123?utm_term=don%2527t+look+back+full+movie+2009 PDF link annotation
    • http://dimozakebaba.scienceontheweb.net/jelonok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467586/normal_5fe9f75502d97.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473052/normal_5fffb0c3b69db.pdfIn PDF document text
    • http://bokevefinobi.iblogger.org/finakezuwedofi.pdfIn PDF document text
    • http://labagokawiboze.22web.org/the_stranger_in_the_woods_chapter_1_summary.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/79459141480.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/28749423203.pdfIn PDF document text
    • http://gedadekenoz.mywebcommunity.org/fojogovugim.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/fixararololu/52037513901.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/who_is_the_great_multitude_in_revelation_7_9.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/kutugigelukuxono.pdfIn PDF document text
    • http://kepipejesa.epizy.com/ptcb_certification_application_guidelines_and_requirements.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/fibozaxulat.pdfIn PDF document text
    • http://zufisad.rf.gd/electrophysiological_analysis_of_synaptic_transmission.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/bidusuwijetap.pdfIn PDF document text
    • http://letozin.rf.gd/7666967204.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/fatoziwakijo.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/cogs_calculation_in_balance_sheet.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_off0000d528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD528 5480 bytes
SHA-256: 1803057425480d4f8a3ab223c9f720d2559efee3693ba73cdf6d06d1ce098421
font_01_sfnt_off0000e7d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D8 10792 bytes
SHA-256: c7fd3d01f78de42bc22f9f22dcad058e101c98662ce9903ecc01a8df7ec70e14

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