Malicious PDF — malware analysis report

Static analysis result for SHA-256 e66a364f4c5cedf7…

MALICIOUS

PDF

77.3 KB Created: 2020-12-06 14:44:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 993bb767073aa15a9376d8d8474b8e9e SHA-1: 12e0b67edfa22e3d0519f79e70aa28bdaa837dad SHA-256: e66a364f4c5cedf75fdc70692a6ef4e3107bdca1e8674505c30ce58a3a478a71
154 Risk Score

Malware Insights

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

The PDF file contains a link disguised as a search result for a technical manual, which is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL points to a known malicious redirector, likely serving as a gateway to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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
  • 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.
  • 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://gettraff.ru/strik?utm_term=sonicwall+tz+205+manual+espa%25C3%25B1ol In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369505/normal_5fbc602a21796.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486987/normal_5fc8a45247558.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407302/normal_5faf2fb366caf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368468/normal_5f885893adb61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419205/normal_5fa5adbd60c05.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447884/normal_5fc88257e92ba.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/luxelula/cashflow_quadrant_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf525ef8cdb769c6d97870/1606373983105/zuvuduwimawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edf2e922-80b9-4db7-9830-63955c7c08b8/42066419080.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_off0000e996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE996 5840 bytes
SHA-256: 31f3014f7c4775c1d76b2c7d7cf70fb12ad7abfe1f8e214eecbb3b5f4c8e6248
font_01_sfnt_off0000fd44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD44 12404 bytes
SHA-256: ac1597e698f3303b52911b88abda8566fc85646dd9ebc4c4492303adbddbe0d5