Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d60854df600c53b…

MALICIOUS

PDF

87.7 KB Created: 2021-03-23 13:55:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33bf4b70fb0efbd016cbb20657ba4914 SHA-1: 396915e88c4374cb89a70f391155f30abd161481 SHA-256: 3d60854df600c53b29971ce8407681e1352b060f6d2185d4649988a604f54c52
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting services, indicating a link farm or redirection scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/strik?utm_term=how+to+connect+skullcandy+sesh+wireless+headphones
    • https://pafuxasakilufa.weebly.com/uploads/1/3/5/3/135327400/naxaluvunuzaze.pdf
    • https://nawiwunusuwo.weebly.com/uploads/1/3/2/7/132741181/bevetutifafa_jisuviz_firafum.pdf
    • https://static.s123-cdn-static.com/uploads/4425256/normal_5fefcab7868cd.pdf
    • http://nijubuwuw.iblogger.org/business_books_download_free.pdf
    • https://cdn-cms.f-static.net/uploads/4460950/normal_60373bec18e7b.pdf
    • https://cdn-cms.f-static.net/uploads/4444369/normal_601d05a84cc8d.pdf
    • https://cdn-cms.f-static.net/uploads/4379851/normal_6036b20164c47.pdf
    • https://cdn-cms.f-static.net/uploads/4490121/normal_600f03dfa5cc3.pdf
    • https://static.s123-cdn-static.com/uploads/4489843/normal_5ff1ce9d827fc.pdf
    • https://cdn-cms.f-static.net/uploads/4448339/normal_602cdbe620ddd.pdf
    • http://debasowajedo.22web.org/bbt_mailing_address_auto_loan.pdf
    • https://cdn.sqhk.co/wowobavukelo/eehggiA/du_sol_marksheet_2017.pdf
    • https://cdn.sqhk.co/difotolu/ohj1zic/room_agreement_format.pdf
    • https://tixovokibena.weebly.com/uploads/1/3/4/1/134109053/3986256.pdf
    • http://lasomupigo.iblogger.org/nebaxuzuwofubimel.pdf
    • https://pokakananame.weebly.com/uploads/1/3/4/4/134457622/vusabezuvadirixob.pdf
    • https://dadojunolibete.weebly.com/uploads/1/3/2/6/132683289/ff45e5.pdf
    • https://static.s123-cdn-static.com/uploads/4370533/normal_5fcad83c7cd3a.pdf
    • https://cdn.sqhk.co/zupodejadofe/ejeUhhW/tojaperubesirevaxok.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/489e8f60-4266-434f-baca-384aa15d366b/39105131557.pdf
    • http://wuxodevidupibe.epizy.com/tivuludovidumukeson.pdf
    • https://uploads.strikinglycdn.com/files/972c7104-733e-489d-89f2-b523b34dc05b/pentair_easy_touch_panel_no_power.pdf
    • https://uploads.strikinglycdn.com/files/c2b27171-c49a-4ebf-a9c5-d47fd52ca035/pizalokupenibapasobemabu.pdf
    • https://uploads.strikinglycdn.com/files/e62b4f49-60ae-4085-8eb0-a10187048ec2/present_continuous_tense_worksheet_grade_7.pdf
    • https://uploads.strikinglycdn.com/files/e311d47e-c40d-4d4d-88cd-ab47771f3627/65209777948.pdf
    • http://fetavuxoze.epizy.com/financial_reporting_and_analysis_7th_edition.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a7c.bin
7d8f2244ec56a094d2193b94ab935c046e2aa8ad302c38cad442a3dd3cabfacc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A7C 5380 bytes
font_01_sfnt_off00012cd9.bin
982b0b8f5e719116bc3ea06736a9624fc8a25eb0f3bab1c6c95eea2f8454062a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12CD9 10556 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.