Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c642661c0d8a19d…

MALICIOUS

PDF

65.2 KB Created: 2020-11-16 17:27:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 95af0201adba2c8030311f4d6acd95df SHA-1: d243a01152bb9df00ae493ae226cdf34ba5c8f9e SHA-256: 2c642661c0d8a19d7142f81b7c97828e7d25ccea8e77ef78b34ab354b9d65998
104 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffe.ru/strik?utm_term=only+ekg+book+you+ll+ever+need PDF link annotation
    • https://mizunawakore.weebly.com/uploads/1/3/1/4/131406356/vapinixijusapuk-jizizejizize-xuxivujeriboka.pdfIn PDF document text
    • https://nupejaxisolerez.weebly.com/uploads/1/3/4/3/134348845/8302290.pdfIn PDF document text
    • https://ditiwudo.weebly.com/uploads/1/3/1/4/131452947/bevibodabetekowana.pdfIn PDF document text
    • https://fufajogaxofamu.weebly.com/uploads/1/3/4/6/134627879/6259383.pdfIn PDF document text
    • https://dobajipewaxegas.weebly.com/uploads/1/3/4/6/134605260/nisiripa.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/voxipanovigepiv/capitulo_4a_asking_questions_continued_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/7224445057.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/sexitinijulenopebumilase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3606012-ace9-433d-ad55-e4a32bc82521/43535353443.pdfIn PDF document text
    • https://s3.amazonaws.com/wifozuxeku/xobomubukodovidoneg.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_off0000c4d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4D2 5000 bytes
SHA-256: b08f5e8fdebd6b81722f3ea47baebcd36bc152125ff644e862b45ad9d200660b
font_01_sfnt_off0000d5f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F3 10076 bytes
SHA-256: 49d185db383ce709edca7b470f87f76909d895cd2f42f2fc7a6e04776b764adc