Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec470142c8e6cd54…

MALICIOUS

PDF

73.0 KB Created: 2020-11-25 12:11:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e359f1c911a0b3f049d78f8f0719740c SHA-1: dbbc9f881cb4cf676b9643c3874b04106f7188c6 SHA-256: ec470142c8e6cd548e2378ebef47e6cbac483d4168127c7b5b9e9ea38f7328c3
154 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 routes users through malicious redirector infrastructure. 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
  • 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/123?utm_term=examples+of+adaptive+behavior+assessments In PDF document text
    • https://cdn-cms.f-static.net/uploads/4476140/normal_5fa936fdd54b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428039/normal_5fb44056b46bd.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/afa7ee664f026.pdfIn PDF document text
    • https://kagizorofom.weebly.com/uploads/1/3/4/4/134476017/e4924.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476147/normal_5fa9ce9b6ddbf.pdfIn PDF document text
    • https://lekekupoj.weebly.com/uploads/1/3/4/5/134513515/dafepok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485703/normal_5fa9172eae33f.pdfIn PDF document text
    • https://femitinekabel.weebly.com/uploads/1/3/1/4/131437683/580bbf05e8d8d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467975/normal_5fbddfe1bb3a8.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/nawuvud/93204508726.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16ffc52f-1a19-41a5-84ec-222ff78aa535/california_heart_association_fountain_valley.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c478bbf5-f886-4044-a03e-0878adc37694/tuvamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/034cd1c9-f9bc-4e5c-863b-fa97fe75136e/gimude.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/dajoladujijavitazizunizi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec88dc59-421b-4b84-8b35-17824fab7ff1/wajev.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_off0000e169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE169 5508 bytes
SHA-256: 87f73625dd3815bf909f78a243cdd21ef9a676659ec37b59fa086b881b9bc451
font_01_sfnt_off0000f3fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FE 10260 bytes
SHA-256: 20f74aeaa403dcbe1944d2c60e39703c03d88496db98c1d1e30c139327361c2e

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