Malicious PDF — malware analysis report

Static analysis result for SHA-256 45fb7a087e733f39…

MALICIOUS

PDF

67.5 KB Created: 2020-12-19 04:42:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 9ec840756927bf0b50b8ee20fcbe0dfa SHA-1: dee0de0e18534eacdca786f20611f38feb094a0c SHA-256: 45fb7a087e733f391d9bfb918b9d851986b8f8bdc5f3a3b4a538f07974883932
96 Risk Score

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 embeds external URLs that direct users to attacker-controlled resources. 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/strik?utm_term=manual+tracking+imagej PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449600/normal_5fc0ce7c0a79f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418180/normal_5fc2da27da887.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469617/normal_5fb25236922e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387420/normal_5fd3408c2ba27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379359/normal_5f9555cc4d2fd.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/ef261e72-5143-4eac-8aa2-80bc26df28e5/dan_cathy_shine_shoes.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/wukadipuvugafakewegam.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/xuvojuligifexusurami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a24ad172-18d9-437f-8e7f-6b2ea2a20182/brooklyn_college_acceptance_rate_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cba4049-427b-45bf-987f-d406e14a7bd5/lucius_malfoy_wand.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d7027e7-74ca-41d4-b49a-9d1c6db0c7d2/vishnu_sahasranamam_telugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3f558d0-2d03-4d3c-ab99-74743b2cf97d/vipopizefotaponasanorivar.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/boy_scout_merit_badge_cooking_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/allstar_performance_fuel_pump.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_off0000ca34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA34 5088 bytes
SHA-256: e338229682e863d8bd895c17009adfabc4e7b560a3ccac2ee236a0d1ebd4dc0e
font_01_sfnt_off0000db81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB81 11304 bytes
SHA-256: ca35fa53c2d5910af288bc9f677ef23678e57e073f8192693d3063c08672751f