Malicious PDF — malware analysis report

Static analysis result for SHA-256 02baf326abe20598…

MALICIOUS

PDF

69.0 KB Created: 2020-11-18 07:46:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 3a4c1c4718a2c97737a7f7becf447af1 SHA-1: d889c9d973a3426580dc8535dc44fbc8c15ef9e4 SHA-256: 02baf326abe2059882e79994e9ac89aca1c7d6af3487a5d351e17e84d6e96f99
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 routes users through malicious redirector infrastructure. 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/aws?utm_term=ssrs+branding+package In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370057/normal_5f8b7ddc42a1d.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/5e7362bb-eecc-40e9-9a51-75079894ed5b/2003_polaris_predator_90_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/renew_home_designs_baltimore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ac4ae4e-7917-48da-9ea6-d4ad4d5a30ea/jewenagasakobomidimofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f27acff1-be07-45fa-8580-e5020192e526/wuburetupexidawusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/562a14d4-460e-4744-9627-c9c864c224a0/berks_county_register_of_wills_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fcbb3b4-47d4-424f-bf76-d2a7abf6d4b0/49676800361.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/4242733489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44c2b310-c34e-4d15-8633-eef824a6f265/bunerujumibabopowokubo.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/maryland_letter_of_permit_exception.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8805cfab-9c3f-4617-b60e-8bf39b9c61ec/39994580219.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/zavixun.pdfIn PDF document text
    • https://s3.amazonaws.com/damevusom/roblox_account_passwords_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4423545-b500-4f6d-92ff-d9d6a3294790/69682161105.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/tikisokakevexokiviga.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_off0000cfeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFEB 5516 bytes
SHA-256: 7f2e8f99de471a0a05a357d21ffcbadb0027d3b71083b2d4a022ae37741323e6
font_01_sfnt_off0000e2b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B2 10840 bytes
SHA-256: 49f1497b2b3f38257fc04847e15def00b57073576c8510b2e4931560335b659b

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