Malicious PDF — malware analysis report

Static analysis result for SHA-256 65151215aacd3b0c…

MALICIOUS

PDF

62.7 KB Created: 2020-11-14 22:04:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9debd314886d138efc2a48268e77c750 SHA-1: da6d30835885d0694e8f5742e520660e70e460ee SHA-256: 65151215aacd3b0cefef92b4c02e7070c2291052ee05771df8057cdd1fe161a3
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://traffmen.ru/strik?utm_term=trac%25C3%25A9s+%25C3%25A0+la+r%25C3%25A8gle+cp In PDF document text
    • https://cdn-cms.f-static.net/uploads/4460677/normal_5faa4871556a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453560/normal_5fa0f863db212.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412408/normal_5f9aea11f36fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411714/normal_5fa30f4f822aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372376/normal_5f8c6b543e133.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426815/normal_5f9a760944f54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f92417e1c32b.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/buponuwebi/things_that_start_with_w_for_kids.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/basulin.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/zowuxofevirodut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03cbd013-a918-40d5-8ef8-fc3e7a894525/dead_by_daylight_server_status.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/amish_tripathi_sita_warrior_of_mithila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a3d3cf7-e234-41ef-ba85-9e9c9bee8c9b/jewesuganoxejugo.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_off0000b848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB848 5568 bytes
SHA-256: 14528a7343d8db9837b40fb3ed8010a5e39dc6b91c4a5b4f6b447d3d7d9cdb7d
font_01_sfnt_off0000ca1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA1B 10960 bytes
SHA-256: 4f135d6e5c027637d2879e76886e014f36bfe434801bd53fc42edc58e3718acb

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