Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee5eadba9bbfa52b…

MALICIOUS

PDF

111.4 KB Created: 2020-11-18 07:01:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 697707c964376f64534a32b1ffa88633 SHA-1: d2cae0af0a7eac29159cab0ec318bd87cd450990 SHA-256: ee5eadba9bbfa52b179f53529f4fc96dc2a237b415aa86cbbc6d5608a88846ff
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 0.9997

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
  • 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://traffmen.ru/strik?utm_term=navy+dress+blue+uniform In PDF document text
    • https://cdn-cms.f-static.net/uploads/4410985/normal_5fa0a6b94e8c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413845/normal_5fae9862c9243.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487382/normal_5fb440701cf61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f93c0a21a59a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368219/normal_5faa47b29af88.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/011d87ba-ef1a-448e-a4bd-9db8e456dc51/gounod_pater_noster_ed._rigaudiere_s.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/bevoromos.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/12443233787.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/90279412944.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bb9ab16-5cd9-480d-87e1-363fd0598d0c/giresesepimam.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/direct_object_worksheets_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/2418479613.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/50856865538.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016915.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16915 5128 bytes
SHA-256: 5b9bcbdec41b7604ee0a28cc370589d4c12e085abb7e2d676cd16349fb341406
font_01_sfnt_off00017a70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A70 11780 bytes
SHA-256: a7ee980990b022507917f70aa04e30a56c707f6fbf822fc2a31ee0293708947f
font_02_sfnt_off0001a271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A271 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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