Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ed92974b5cb9253…

MALICIOUS

PDF

71.1 KB Created: 2020-11-14 06:44:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 6061287a71fcf81dfb9985722d2411b3 SHA-1: 1053414c3e185427ea98002db11c0056fcd5cd6a SHA-256: 8ed92974b5cb925331f7adced9c3d306d35f2496c774234e0d4ea4e6a90a0c9e
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://trafffe.ru/strik?utm_term=real+estate+open+house+sign+in+sheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450734/normal_5fa7c15818077.pdfIn PDF document text
    • https://sesizapilutib.weebly.com/uploads/1/3/4/2/134266568/372784.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390374/normal_5f93fdf9113b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404296/normal_5f913ff6d5dbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412900/normal_5fab531b5f694.pdfIn PDF document text
    • https://pibogexo.weebly.com/uploads/1/3/4/6/134649935/wusomu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388407/normal_5f9f790be2768.pdfIn PDF document text
    • https://rabugotekinevod.weebly.com/uploads/1/3/1/8/131871666/2977379.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402711/normal_5f9ad96ac393d.pdfIn PDF document text
    • https://nilitimuxuzadox.weebly.com/uploads/1/3/4/3/134320754/nomulugavezoga-pudibuzemifaw-faxomefetigu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403541/normal_5f93d2ca2e7de.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/3af326b8-72cc-4d5c-a5f7-c80120ddce38/7540592031.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dd5ff5d-e3fb-40e8-87de-91b29451660d/21712156679.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b160da8-f1a9-48d0-aa5a-f3e29535617f/zapidoraluxikododebisigul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fd4b52c-e9a3-45f8-897b-56f651786889/tazowapupixap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78a87df2-9215-4393-8ff4-416d8eab1414/25622516349.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9127b332-cda1-40f6-a554-f147a395e32b/kedope.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_off0000d820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD820 4992 bytes
SHA-256: 20b140b92e20d6e8a73281a30621c5f4e84560b2d8100d61bcf7b15715d2b99d
font_01_sfnt_off0000e923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE923 11392 bytes
SHA-256: bf6a987b25a73cecfb2dbade17d0ab85cd05fa9fb085b0d42651a13b15d794c3

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