Malicious PDF — malware analysis report

Static analysis result for SHA-256 174774abfe796516…

MALICIOUS

PDF

63.7 KB Created: 2020-11-21 18:12:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ef3f0ab276c27bd58ff32bf6d8d83a67 SHA-1: 2486f8c2b3bd6873748104262f3267e778da2abb SHA-256: 174774abfe7965168ec0b59de42a519f0c70dc64ac77ce10debdaaf7abbe52ff
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. It contains an embedded URL pointing to 'traffking.ru', which is a strong indicator of a phishing or malware distribution attempt. The PDF structure itself does not contain executable scripts, but the presence of the malicious URL suggests an attempt to redirect the user to a harmful site.

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://traffking.ru/123?utm_term=stem+export+garageband PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368506/normal_5f8894a5cd968.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373778/normal_5fad31faa49e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_5f91db0ab2de1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410416/normal_5fa98f7d96c75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370269/normal_5fa69ecab7862.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375694/normal_5f8ee41eb9e57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382784/normal_5f8fbc6d8c23f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366973/normal_5f9283f46395b.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/gupuso/80511263830.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/plot_development.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86b645b2-a246-4524-8934-d2b0de305e59/15006442697.pdfIn PDF document text
    • https://s3.amazonaws.com/fasotajedag/92808016537.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/1377327222.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_off0000bc0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC0D 5380 bytes
SHA-256: 20c4f3b60d20293d9e196c7c34a5a38ed23536690b2f1a0f62931a9a1acc2221
font_01_sfnt_off0000ce3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE3E 10464 bytes
SHA-256: 8aa9468cc8a76c5a871acaf3bc62f833bf1be3c4cec0a63f2e6f0b00fa54e7fc