Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f7dad0030241742…

MALICIOUS

PDF

39.2 KB Created: 2020-11-02 01:53:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9587cb88193b158cfdabef8e23004a2a SHA-1: d83fd37141e917013ef0cc112b31b2ee681aaa8d SHA-256: 3f7dad003024174207ede3698ca45b89234d0643b854f862ffdb852a3db1cd82
94 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 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 1.0000

Heuristics 3

  • 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://cctraff.ru/strik?keyword=lippincott+manual+of+nursing+2019 In PDF document text
    • https://pedomolakikivo.weebly.com/uploads/1/3/4/4/134440841/goxibirozosemerovuk.pdfIn PDF document text
    • https://bopiwode.weebly.com/uploads/1/3/4/3/134367631/9352404.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/8e42bfb8d1b0f.pdfIn PDF document text
    • https://vapesokon.weebly.com/uploads/1/3/4/3/134329795/xuxanaxomalozo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386834/normal_5f95676aee69c.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/liwixizuladogefi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381748/normal_5f986e35b438b.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/gotijejaj/cell_suspension_culture.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/xewixuzesilofimug.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/xepobaxeterabeveradawebo.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_off00005939.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5939 5756 bytes
SHA-256: dc884e4318680581777eafc233346ba29435caae794ef3e9d66076cf8d196698
font_01_sfnt_off00006cc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC2 10348 bytes
SHA-256: ab8800c6acb7c07f17df77bec18b6c722251cbd9b45371a1e1b79885391a1d4b

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