Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35be0bf1bca4dbd…

MALICIOUS

PDF

60.7 KB Created: 2020-11-11 05:15:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0b60737962cf539f672051fca38a7fad SHA-1: 28a41413b9d581bb2d1c0cb0f329412c349af6fa SHA-256: e35be0bf1bca4dbd7d866c6efa819c77775842f4c77444120e6f69b21d75a0ba
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 0.9995

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://cctraff.ru/strik?keyword=apple+smart+battery+case+iphone+6s In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413567/normal_5f942ad1cb9b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368228/normal_5f9a1506c9abe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366947/normal_5f90904b49e70.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e872d8fc-a1f4-4185-8336-ab45315d2dce/yamaha_rx_v681bl.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3cb5741-9cda-43e5-8e40-05d8c1b6f79c/96082834962.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/kixugokabexamulinuro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/710621ef-5159-4e8d-a537-f4d7ca4471fa/51963630891.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caee1f2e-458f-4cf3-b707-6694236f1266/32636931171.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23ebc6f7-e459-4b6e-9a96-ad609d1ea855/camex_2020_show_hours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70b86a22-56db-4fe9-9421-b39927460e05/supreme_commander_2_revamp_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/deborah_gail_stone_cause_of_death.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dd1ac40-b08d-4cc1-aa3d-9cfc8d0fa9aa/zaximibudovi.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_off0000b3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3D1 5556 bytes
SHA-256: 7a4cc5b3ee3ad3ce46d21c4746df8cdfefe626c289b50b992cc242cada7b00c3
font_01_sfnt_off0000c690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC690 9340 bytes
SHA-256: 51b7451028952e38f8056e7b2e6067a0ad8b8f798b7cbce384f378d08aab5cbe

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