Malicious PDF — malware analysis report

Static analysis result for SHA-256 b512b3e08e29872d…

MALICIOUS

PDF

76.4 KB Created: 2021-05-24 14:24:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: fe0cd0955b1541a25b0e753332f6d70b SHA-1: 20444984172ebea0449e0ba43aad4b436c58b11c SHA-256: b512b3e08e29872d45672401a9238aa14e0777744f7464162025d990d9d84364
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a driver download link for a Canon printer. This URL, 'https://pelibifir.ru/strik?utm_term=canon+lbp6000+driver+free+download+for+windows+7+64+bit', is highly suspicious and likely leads to a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pelibifir.ru/strik?utm_term=canon+lbp6000+driver+free+download+for+windows+7+64+bit PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417030/normal_6007c596ce9cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469831/normal_5fdbe7d3545bb.pdfIn PDF document text
    • https://fetatoba.weebly.com/uploads/1/3/4/6/134689412/4859385.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421333/normal_60375b3400c16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448984/normal_5ff52de0570d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486197/normal_6042210b412ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490138/normal_604af2d84609f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471250/normal_5fc87764b92b7.pdfIn PDF document text
    • https://rugomekedakore.weebly.com/uploads/1/3/5/3/135302214/15c18d170.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371269/normal_60657d052d88c.pdfIn PDF document text
    • https://lojexidipiwakif.weebly.com/uploads/1/3/4/0/134041559/8572064.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367922/normal_5feb95bb921f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469353/normal_600541abe05b8.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/4781ed60-d338-42fe-8ae1-198022a26933/what_is_triage_nurse_ordering.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/loxaxujixid.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/hamilton_beach_electric_rice_cooker_and_steamer.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/mumakotowogogate.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/latest_avid_application_manager.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/cefsharp._core._dll_microsoft.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90f5fb91-dc44-4cf0-ae3b-a8aa52168b90/31568307926.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb1b5978-5d9d-48cf-a5c7-bed402531f9b/38694015416.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f105444-4f57-48d2-b4bb-b614156a3ccb/85115434306.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51217e28-cd49-415d-bcb8-816dfb04929d/jack_reacher_series_movies_in_order.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_off0000ec84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC84 5696 bytes
SHA-256: 8725af57308793c736216ffd34a26426a3f32dba45f22e3b1a56f454e01a8900
font_01_sfnt_off0001000f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1000F 10540 bytes
SHA-256: 387f7c8adc31f6edf5de00c1028afb38ec2a173fd71e48863def6f4c3b6b0bb9

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