Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bca89bf69b9114c…

MALICIOUS

PDF

75.2 KB Created: 2021-05-30 02:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3b28cbdcb9bfab63394517b3340f842b SHA-1: c6fd114a06019622a9ddef8f2cedbc729c736cff SHA-256: 2bca89bf69b9114c3ee365bb78ec65b429493b639d74fc644e1a9afbe00a49e9
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, which points to a suspicious domain. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URL suggest it's designed to redirect users to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://seumenha.ru/123?utm_term=deep+sea+fishing+guides+port+aransas+tx PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4473656/normal_600004e81f114.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444649/normal_5fd6449d168e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386824/normal_5ff507edcaad6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420430/normal_604e8e8d63f1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445541/normal_60270c39170d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469386/normal_604a214fb9108.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421366/normal_605f53808acf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385231/normal_603300217f43e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458622/normal_6050b54de9044.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370307/normal_6054ad947334e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496148/normal_6041c7f95efca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472486/normal_5fe4fc7d3acb6.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4428078/normal_60b20f821b413.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_600f1edb0d883.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413017/normal_60317048aed34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416318/normal_600a650529720.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/0f2623cc-0d92-4e06-9560-501a42004557/soradotowumuwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd5e03ee-7b24-42ce-9190-5fb8a22957c7/tubidy_mp3_gratis_descargar_musica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b22d7818-9a0a-41cb-b24c-81aa92657cf1/the_social_contract_and_discourses_rousseau.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a4042c7-dc99-4acd-8778-77cf12af9205/55798905840.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ee46989-85c2-4626-825e-17b6e00556c9/zamalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0765c0b2-2f93-4df4-b44b-8cce128ee10f/15607488967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d123000-777a-4181-9935-c5bc1ec6fd5d/how_to_add_image_to_cricut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9488cd1c-717b-442a-9c9f-377011eedcc7/schumacher_electric_model_ssc-1500a.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_off0000e9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C7 5336 bytes
SHA-256: 5a4c2eaa8e7db6e8665f61e9e233a14fc3deac18b0a0d9e1957533b57a7a5f47
font_01_sfnt_off0000fbf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF9 10316 bytes
SHA-256: 72fd050aa857bc35f5098b27ee5996cf0dc5116ddd00a02471e1e3b1e50ef0aa

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