Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f2ff0f72dd9b973…

MALICIOUS

PDF

71.2 KB Created: 2020-11-13 05:38:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 634ad066164eaa1925ab03170397758c SHA-1: 2fdf36e5ada0db158ad85a3aa15e300dfc0a99ed SHA-256: 1f2ff0f72dd9b973abda899d2628561befdb48ce92e350fc3d9e12f1168bdb3e
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=language+guide+french+alphabet In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383304/normal_5f9743542981c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465545/normal_5fa772d1ba199.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424666/normal_5fa271e730358.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417988/normal_5f95b6b4bc214.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394082/normal_5fa4bb3a39449.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393208/normal_5faba0bf3646e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446264/normal_5fa9014f85cdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370555/normal_5fa7d8f057a37.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/tosasugokod/baby_van_gogh_2000_vhs.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/have_been_vs_have_gone.pdfIn PDF document text
    • https://s3.amazonaws.com/rutojo/jodaberibar.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/rapamaked.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/wawusudegamomekidor.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/technical_interview_questions_for_ece_freshers_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/17005503650.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/html5_input_file_accept.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_off0000d538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD538 5320 bytes
SHA-256: ab3ec5cc5f44feaa8460315cd94ef6d2c502d5c03a9e658498dd4686bca12d4a
font_01_sfnt_off0000e74b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE74B 13052 bytes
SHA-256: 081fdb635643acfea3982f62470437cd29ebf34a7247508879664a042d7903bd

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