Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e52037fba70bac7…

MALICIOUS

PDF

68.8 KB Created: 2020-12-17 20:41:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a06df8f6b515b2b1a4112c5a2e797532 SHA-1: ca343702c3783e0da2c91241e5808a5169c31d95 SHA-256: 9e52037fba70bac7d1ab5f4d3b4fc2a7a53155c3ce0d0eff25c828a3ae574386
96 Risk Score

Malware Insights

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

The sample is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URL pointing to 'traffset.ru', which is likely used for phishing or to download a secondary payload. The document body is heavily obfuscated, but the presence of the malicious URL and the high ML score indicate a malicious intent.

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=light+refraction+and+lenses+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379359/normal_5f9e7e0300cd8.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://s3.amazonaws.com/murudute/residence_certificate_format_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79006ddc-687c-46b8-a3f3-66c1929933e4/63793887860.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f8f692c50b1a1e77efcd/t/5fc124c5cb3e0f5771785ffe/1606493381909/cell_parts_matching_worksheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0eb456b97992eb55c2a22/t/5fc115a37acac6192ae76048/1606489508238/fitbit_blaze_manual_svenska.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/white_pages_st_louis_mo_phone_book.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/vonasiruvolifa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc79ecceddbb05c68963a2e/t/5fcc4550662d5e24e0965b21/1607222608736/wekudukeweluvufeku.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf904aeec7ca5c3656500d/t/5fd08ec3c0a29916a56e34d5/1607503564159/89148433289.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/the_invisible_man_by_ralph_ellison.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/50888193477.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/calculated_fields_form_elementor.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc79084633934501854b92a/t/5fd683a27fc52c206929a191/1607893923574/mazuditenumunibeweroduf.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_off0000c46b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC46B 5104 bytes
SHA-256: fb35619d0c349c7759d4165787c5fff486562e926d2346a5fbaa08734349bf59
font_01_sfnt_off0000d5cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CB 9996 bytes
SHA-256: b17b5971c6dcb426145021234ed65f20c0e24d4bb73c5de52ab23bdbaa6b6081
font_02_sfnt_off0000f7ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BA 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.