Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee0467c2fc39c5a…

MALICIOUS

PDF

82.8 KB Created: 2021-02-27 02:44:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 2ee69f06b656a0066f41f2632139fa9c SHA-1: 906b7ac70d35a9ec9579e220fcff622aa3d502b2 SHA-256: 9ee0467c2fc39c5aabca113a2eb261f8cefb7011bb54a2ad0b6928fb16f35db6
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous external URLs, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically points to this behavior, indicating the document's purpose is to serve as a deceptive gateway.

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
  • 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://soxebez.ru/aws?utm_term=harry+potter+illustrated+hardback+book+5 PDF link annotation
    • http://health2health.online/mitologia_celtasxmr9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457005/normal_60213ff6a92d9.pdfIn PDF document text
    • https://cdn.sqhk.co/rorefevobo/jbgj2gg/82817238772.pdfIn PDF document text
    • http://arthromedshop.xyz/51456767542df14g.pdfIn PDF document text
    • http://redit.fun/dell_3100cn_service_manualxz4xr.pdfIn PDF document text
    • https://cdn.sqhk.co/nugopanage/tygi9xj/hitman_sniper_2_ios.pdfIn PDF document text
    • http://hushseo.online/olevia_232-s13_power_cord2qh7y.pdfIn PDF document text
    • http://milanomodaitaly.site/is_ib_acio_conducted_every_year_quoraqljwq.pdfIn PDF document text
    • http://alcexpress3.xyz/nutritional_medicine7hjzp.pdfIn PDF document text
    • http://losqutoq.online/honda_civic_si_2006_exhaust0jw9m.pdfIn PDF document text
    • http://vulgargirls.fun/21543703009y6x1k.pdfIn PDF document text
    • http://brosbass.com/8182869293ht2et.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470231/normal_6030487c2ab23.pdfIn PDF document text
    • http://gonunimob.iblogger.org/35062246689.pdfIn PDF document text
    • https://cdn.sqhk.co/lovojekaboxi/ifpIdRy/war_1944_world_war_ii_casualties.pdfIn PDF document text
    • http://wofoweniwer.iblogger.org/lorekorovinewi.pdfIn PDF document text
    • https://cdn.sqhk.co/nejijilo/bjaxjei/kevimuwinokutusaviweruma.pdfIn PDF document text
    • https://cdn.sqhk.co/nedivixozu/47gfK12/josafipizexuv.pdfIn PDF document text
    • https://cdn.sqhk.co/kawurefeki/jgnJhjh/adderall_xr_dosage_for_8_year_old.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00010655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10655 5552 bytes
SHA-256: 5ab487ed3ac7de584f5e4baff246f81a16dff6ae9f234a98961afe8d366511ce
font_01_sfnt_off0001192d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1192D 10852 bytes
SHA-256: c2bb81e86654ef05d5a7b8d12feadc446692bd3f75de83bb120d093e687bed5e

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