Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d25185c4ccd88e…

MALICIOUS

PDF

62.8 KB Created: 2020-11-12 22:04:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 07b5ee578cede93d1a5756fc6eacec2d SHA-1: 650a2fa6f879f4157ec133cea27edd0a69f72ee8 SHA-256: 80d25185c4ccd88e7c7e57ed0b4052cb47d618406bd4fcf2126b2344bb507cdf
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 Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URI pointing to 'traffset.ru', which is likely used to redirect the user to a malicious site. No scripts were extracted, but the presence of the malicious URL and the high detection scores indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/123?utm_term=at%2526t+anywho+reverse+phone+lookup PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366034/normal_5f8d0e085a290.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366347/normal_5f89c9799a4f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_5f872e1abea3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382976/normal_5fa31477ef260.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481286/normal_5fad6fac9efd1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/1f29133e-5216-4433-a948-6d4fb333cf32/22251144885.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/multiplying_dividing_real_numbers_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/293a4597-55c4-453b-8a4a-5e5992bac8d9/bezelosaxapejujitu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7e045cc-3d1a-4271-a643-1c3aa2b4c8b2/10648781668.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9eb40d7-983b-4dcd-94ed-f679e586c8f5/xapavadupej.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/speak_softly_love_tab.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b2cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2CB 3552 bytes
SHA-256: d3345116028b4a52e7bb30f0074f4a3ac5eab4d1d776ec17dcd364b8e4f558d3
font_01_sfnt_off0000be86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE86 10324 bytes
SHA-256: 0aed73a48201f477a41d6a824a0a55fc58636ede7a7e992390f5b1b945d51d9e
font_02_sfnt_off0000e145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE145 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3