Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc77f4ae13756920…

MALICIOUS

PDF

64.4 KB Created: 2020-11-25 14:50:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1ad7da88222211a8ba66e9acfaf4e358 SHA-1: 2cd14e3fc23612b0f888e174cdba3e096b2def3c SHA-256: bc77f4ae137569208bd6936aa5e87f6cdb4231e39c217c8cb133bf53840e81bc
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/aws?utm_term=tv+guide+melbourne+survivor In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_5f9bd5e14dbe3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390681/normal_5f991d768e117.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367305/normal_5f8782319d001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443804/normal_5fa34136921c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451229/normal_5faba97241d6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f8b19992df17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382617/normal_5fb7197537345.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467915/normal_5fa541f71be2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503309/normal_5fb43e0a86020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390642/normal_5f9a0da6a264f.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/cb24eca2-d73d-4299-8b7c-25db91517c85/uma_mulher_funciona_yahoo_respostas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3070c76c-ccd5-4216-9571-30b69a1623a4/gubemo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bddb647-97ca-40ee-a970-d9543b083f77/67787339700.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8796521b-d94a-41f6-8b4e-8d124480e830/35946733977.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_off0000bfef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFEF 5084 bytes
SHA-256: 7738b6095ceed9bb58e121e7404d48bcf681f2ec9b76909b64c86e1e0b39c135
font_01_sfnt_off0000d12a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD12A 10548 bytes
SHA-256: 1584f2f566c818ac1732cf14e62bb8616575e439d1dd5f1b290ed6dbd9f9b0c4

Open this report in the interactive analyzer, or submit your own file for analysis.