Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cba9c42fb087cd7…

MALICIOUS

PDF

79.5 KB Created: 2021-02-18 19:41:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 41959f5623fd07b905214a49c93cab80 SHA-1: 28c6f25f85a3acd627e58217fa8574438df4c491 SHA-256: 2cba9c42fb087cd7e2859ef064bf3821c4ef7b607b863c724c6d9149cb1f5cbd
136 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://leonvi.ru/strik?utm_term=how+to+trade+for+free+on+coinbase+pro PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4386363/normal_5ffd306289e42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368487/normal_601a6a8507fd8.pdfIn PDF document text
    • http://xugafigipi.22web.org/50737522847.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377909/normal_5ffe93a4d7e3a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470385/normal_5febdb8627bba.pdfIn PDF document text
    • http://golivexi.22web.org/pokaxadofixanipunotiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390661/normal_5fd633c59161a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402244/normal_60257a9ae7d31.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/purawuma/27632696310.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/angular_8_reactive_forms_email_validation.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/advanced_fetal_monitoring_test_questions_and_answers.pdfIn PDF document text
    • http://jefevuxivux.epizy.com/lumosity_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/raladenikufuveroxagovu.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/miracle_box_2._82_crack_link.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/amrita_rai_photo.pdfIn PDF document text
    • http://tajisogekumobuk.epizy.com/estimating_square_roots_worksheet_doc.pdfIn PDF document text
    • http://fobonerenajob.epizy.com/63766790268.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/gezubotaxikevezaxizu.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_off0000f7e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E4 5308 bytes
SHA-256: 9b88d16c242d5887c82e3577c5ef798b4131515aa9d6ac6274586ed0a1836d5a
font_01_sfnt_off00010a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A11 11404 bytes
SHA-256: be7f2bd59835138ee04ee3d2db58a58c140956d3e173612a9bbc40bdbdd974f3

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