Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed0149fc79d9b546…

MALICIOUS

PDF

76.6 KB Created: 2021-02-06 16:36:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7d3c9ece0068e1a99bd22fabfaee5dd1 SHA-1: e659b7882466d42b2d1d2fb663eb9636a43baf7d SHA-256: ed0149fc79d9b54673dec7d3eedf4e92a3e9db78f45cffcdb2d6dfbe601ab521
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs, with one prominent URL being https://druttle.ru/aws?utm_term=aafp+guidelines+breast+cancer+screening, suggesting a phishing or redirection attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing lure, likely aiming to direct the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/aws?utm_term=aafp+guidelines+breast+cancer+screening PDF link annotation
    • http://shoop-fl.ru/9635006941331ngm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452392/normal_5fee1b0515d2e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489440/normal_5fe3a4e781e60.pdfIn PDF document text
    • http://saganofodevuset.22web.org/autocad_2007_windows_10_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386849/normal_5fe3688672bfb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384304/normal_601ca3cda9749.pdfIn PDF document text
    • http://bonifacy.site/importance_of_civic_educationgvrln.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418185/normal_5ff759ea7566d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473056/normal_5feafabfc356d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406775/normal_5fd07cf3be785.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388422/normal_5fdc34ea257dd.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/petubapizo/best_college_biology_textbook.pdfIn PDF document text
    • http://bidasumibave.epizy.com/characteristics_of_information_system_in_mis.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_off0000ee7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7A 5452 bytes
SHA-256: 568f0bddf63d61e871da468b8be671033d91201c13301cd490fa1a34961e065f
font_01_sfnt_off00010118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10118 10592 bytes
SHA-256: 79c7ac5d292e366a30cf896182976cc2278a7c7ada8b20933596c4197774e3fa

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