Malicious PDF — malware analysis report

Static analysis result for SHA-256 0da3e63b04bf45c9…

MALICIOUS

PDF

64.7 KB Created: 2020-11-26 17:17:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5eca83bbd8617ce555c4e87687b40e58 SHA-1: 11c6c4133387dabec15afeb638fac2b97c8fcce4 SHA-256: 0da3e63b04bf45c97db2a250096cb256e8aee849db99345b059ba418915549a4
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/123?utm_term=white+fang+pdf+ebook In PDF document text
    • https://cdn-cms.f-static.net/uploads/4422385/normal_5fa613d424a16.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/vapite/83100986805.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6994479c-6338-419e-a6e7-7ec409d82519/48_hour_xbox_live_codes_free.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/chudley_cannons_poster.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/78191718917.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/30560343433.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/calendrier_fiscal_2019_tunisie.pdfIn PDF document text
    • https://s3.amazonaws.com/xebareto/lifetime_fitness_class_schedule_fridley_mn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55d23095-cd58-44b6-b9c9-cd7cb1b657b8/viwukononedevulewama.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/common_polyatomic_ions_list_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/nazezawovi/pipewuxikunuzeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9c6512c-0200-462f-99b9-0c9660900582/zowuwarefexegaxomokoja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91cc317e-d790-4e09-861d-4fbeaa6e78d5/35122902664.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb05438f-8310-4653-87c6-55153adf3721/mewidupakiku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16da8de5-4b54-4398-bcec-19f0caa9eca9/lejufebupeneder.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/biforesavarexajogubo.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_off0000bfff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFFF 5216 bytes
SHA-256: 0310c4295202ac75e9a375348de67d89beb3eeae5292a9d43295a42c1bf40c4a
font_01_sfnt_off0000d1ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1CE 10656 bytes
SHA-256: 04ec72feb0c6e7a94f19cc40c028d2ce393954a32b3fd8d617b2551d75eade0a

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