Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d33ee9c55710172…

MALICIOUS

PDF

189.7 KB Created: 2020-11-18 06:27:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bb2efdf37eeb45695bf038b721ced5e8 SHA-1: d4142de23ddc6dfdb6af6d7e4159b1b5af4d11b9 SHA-256: 1d33ee9c55710172b051f417762f2aef6209dfa264d3a15882cba1b4b194a9b4
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive lure. 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 0.9995

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://traffnew.ru/strik?utm_term=livro+o+escaravelho+do+diabo+ler+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5fac59383746d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407777/normal_5f972c25e7822.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463824/normal_5fa8670c4ac4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5f874e04bc597.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371013/normal_5fb4008b3e9cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374848/normal_5f89657bc0c4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404285/normal_5fab2669871bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465705/normal_5fa4fdc68d22a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446401/normal_5fb289b7c8504.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379369/normal_5f91649097b4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379471/normal_5fa53e5298954.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8466b837-3bd1-4d8a-b6aa-1286eaffa235/zejiroke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a47c14ce-2691-480d-807f-63c81c8733f6/lisuguxiduziparemavega.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dff2734-1337-4d8d-a8d2-e3674fd01aa1/18543851108.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79b97c1a-af97-4ebc-8799-94a64f8166fb/23834081425.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002ac32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC32 5168 bytes
SHA-256: 5e87f2c68d6aa3b5536c365499ced33109b3da52a15628a1bb1689e50b6514a6
font_01_sfnt_off0002bdc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDC0 13876 bytes
SHA-256: 2ce56b150c49ed945fe0d91850a401566d61636636356650c3f4da328b8e574f

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