Malicious PDF — malware analysis report

Static analysis result for SHA-256 b58cf662cde8a6a4…

MALICIOUS

PDF

63.8 KB Created: 2020-11-11 04:40:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 0207f25854b26710233100fbf6ceb7cd SHA-1: 2491db400d30402255cd62717bb613b3c6dc272c SHA-256: b58cf662cde8a6a4ecf0c3bad8f1975aabeeeed8a81a26de3b9418068eca71cb
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 0.9982

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://trafftec.ru/123?keyword=frog+pond+farm+oregon PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413845/normal_5f9cc1661b2f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413005/normal_5f98d5021eb10.pdfIn PDF document text
    • https://derodaju.weebly.com/uploads/1/3/1/6/131606282/gijuwu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411682/normal_5f9a4fad9cd30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366304/normal_5f94e68f597ab.pdfIn PDF document text
    • https://luxapojago.weebly.com/uploads/1/3/4/3/134327771/xegume.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366316/normal_5f8889f257210.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/fomaralunex/sujozoxojijizat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/764c66a3-37ee-4cb6-a30c-aacd2ac2f052/17218034992.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_off0000bdfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDFD 5104 bytes
SHA-256: 2a1580f7e66c5eeff130579cd4844f6693a9be77827f0080776aed51e11cdb9c
font_01_sfnt_off0000cf53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF53 10440 bytes
SHA-256: 28cca89cde9327724dec396f605f479d582632c5fd4f58f7ebd97f7e80da083b

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