Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6cae3135ba6a816…

MALICIOUS

PDF

73.6 KB Created: 2020-11-17 17:50:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fff6e22a094d3b8347b0cff61593230b SHA-1: 282650515dc1574e51d9f0549797df2077f729ae SHA-256: f6cae3135ba6a816dc2de9eda8882b32a05348b04dd50fcc95706395aeb7c272
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffset.ru/123?utm_term=sharp+50+inch+tv+1080p PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385436/normal_5f91c4ee963e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369660/normal_5f8ea1345c867.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367635/normal_5f9d807571c03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385412/normal_5f98dbabd9fd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414164/normal_5f9f7cf270a8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419225/normal_5fa0b1f71b432.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368999/normal_5f8eea950e4e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379626/normal_5faf2b4ad801b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458421/normal_5fa946b7f21c3.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/tetazino/tibemepirinukurovegavu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f081ed00-c866-4b92-a92a-c932b6900eea/tomufefunaruwap.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_off0000e1aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AA 5488 bytes
SHA-256: a23e03e387a2201e68a20ca1aaf54da0b78465cf789b573e8e855ad90af9d00c
font_01_sfnt_off0000f45b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45B 10972 bytes
SHA-256: 90c8383e848428f786de71295325db083b19fd0c4628f216abd52808e80655de

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