Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa86e259f8c6057b…

MALICIOUS

PDF

61.3 KB Created: 2021-01-11 17:56:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 68d61d5d88df3743ba75989577686774 SHA-1: 737ba3b1c24c6f59e11348562ea0c230c58c04b5 SHA-256: fa86e259f8c6057b9249f13138ad551f4561fd6df2e7342edda8fe8bf9ccc993
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that leads to a suspicious domain, identified by heuristics as a potential phishing or malicious link. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into navigating to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://trafffe.ru/aws?utm_term=tesco+dishwasher+rinse+aid+data+sheet PDF link annotation
    • https://cdn.sqhk.co/kagurase/faEsidE/74338671256.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489992/normal_5faa1efa59d1f.pdfIn PDF document text
    • https://cdn.sqhk.co/wabajevebe/jjgghjt/39029148394.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486359/normal_5fd95d460a404.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370269/normal_5f9d3c46d3033.pdfIn PDF document text
    • https://site-1188419.mozfiles.com/files/1188419/events_near_here_today.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369487/normal_5ff2d6632e733.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/faxaxos/printable_bunco_rules_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/ableton_live_10_suite_full_free.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/st_marys_catholic_church_albany_ny.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/33976573940.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/how_to_use_battery_calibration_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/akcent_thats_my_name.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/30437111295.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_off0000b620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB620 5036 bytes
SHA-256: 7cbba2564471b61aee9ed85f93492fba536a11cb56a1020821c87199cf70666c
font_01_sfnt_off0000c74b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC74B 9624 bytes
SHA-256: 60611e836876cf37c8cbac86b24391dadb3c1f9eed0872361c70d97cd6d19e68

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