Malicious PDF — malware analysis report

Static analysis result for SHA-256 5de2143da38e6a30…

MALICIOUS

PDF

69.6 KB Created: 2021-03-14 22:26:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6540b193c22d12b05afa6b48a6e3b854 SHA-1: 9850c4e5036bee38a665c25fb75810900d812405 SHA-256: 5de2143da38e6a30b7fe32bc01d7ff9988203d1d4e211baf0130e14e9125d512
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://botokaw.ru/strik?utm_term=metal+radio+holder+for+motorola+apx+6000 PDF link annotation
    • https://jasenumuruj.weebly.com/uploads/1/3/5/3/135309327/1661876.pdfIn PDF document text
    • http://ninavadilu.22web.org/95542722218.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/pXChjgf/cut_paste_photo_editor_for_pc_download.pdfIn PDF document text
    • https://cdn.sqhk.co/mojubemuwek/hhsibii/travel_bucket_list_map.pdfIn PDF document text
    • https://xufodikufidu.weebly.com/uploads/1/3/5/3/135382923/35dec666447c914.pdfIn PDF document text
    • https://metesanej.weebly.com/uploads/1/3/1/8/131858044/dd4ab591f24.pdfIn PDF document text
    • https://cdn.sqhk.co/fodexuxefeba/sJchcig/worapusijixuzibajofe.pdfIn PDF document text
    • https://zezevibowavaki.weebly.com/uploads/1/3/4/8/134854125/04b20.pdfIn PDF document text
    • https://cdn.sqhk.co/jevikepuja/jLidihG/crime_sim_grand_city.pdfIn PDF document text
    • https://jowufawogutezob.weebly.com/uploads/1/3/0/9/130969037/6691906.pdfIn PDF document text
    • https://cdn.sqhk.co/vomifavafo/h6RxnJL/wefubugututofijogibubovu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mimegovo.epizy.com/9464461300.pdfIn PDF document text
    • http://futilanejorowof.epizy.com/journal_of_business_finance_and_accounting.pdfIn PDF document text
    • http://siletafelit.epizy.com/panasonic_kx-tge232_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39e80adf-2796-4034-bef6-0b884655f786/smithsonian_american_history_museum_shop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fb25834-eed8-4d54-a95d-7ae744532ef0/what_does_sunflowers_symbolize_in_a_dream.pdfIn PDF document text
    • http://notaruk.rf.gd/93683340669.pdfIn PDF document text
    • https://fe426b01-1dd0-498a-b08e-7ec37e320b94.filesusr.com/ugd/6b45f0_20abeb98c2fa4d30a45b1ddd043ef2ed.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/453143e8-4ede-43dc-bfb9-1f5ac478bc34/tawidedokenada.pdfIn PDF document text
    • https://ee897e78-a157-4eb5-8a47-d615096087a2.filesusr.com/ugd/113e89_de972666d6c8499ba672a6d880eb86c3.pdf?index=trueIn PDF document text
    • https://e9b66cc5-9289-431c-8f17-6739e1cd2d88.filesusr.com/ugd/c8f33b_a8d5d88561154a78a936cb252e55fc95.pdf?index=trueIn 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_off0000d465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD465 5472 bytes
SHA-256: ce13f7c0080ca849d0dffb5a43495d2389545842db08de29f66f0001024c780e
font_01_sfnt_off0000e6e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E3 9900 bytes
SHA-256: 5f2fcd5bdc7bfd36ad4818620a7e1f2f3b6304abc9ad304c6b655d65f76942e8

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