Malicious PDF — malware analysis report

Static analysis result for SHA-256 05ed6cd65f09d488…

MALICIOUS

PDF

173.1 KB Created: 2021-03-08 05:33:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 5b54378c48562e11c19e8a769a09cfd2 SHA-1: 8ca1ac1b5e7d06b8cdc6c49eb72f7cf8bd4cbde5 SHA-256: 05ed6cd65f09d4886bd8698aa3a1c32064db8443554954d8e2ff86da92079ae2
126 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including PDF_SEO_DISPOSABLE_LINK_FARM and ML_NYX_PDF_MALICIOUS. The embedded URLs, particularly https://pelibifir.ru/strik and http://bigchance.pw/terraform_load_balancer_target_groups9w55.pdf, are suspicious and likely lead to malicious content or phishing sites. The document body, though heavily obfuscated, suggests a lure related to 'Volo's guide to waterdeep dragon heist'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://pelibifir.ru/strik?utm_term=volo%2527s+guide+to+waterdeep+dragon+heist PDF link annotation
    • http://bigchance.pw/terraform_load_balancer_target_groups9w55.pdfIn PDF document text
    • http://lufijep.iblogger.org/how_to_find_polar_protic_solvents.pdfIn PDF document text
    • http://organicsss.space/surukutgw9by.pdfIn PDF document text
    • http://vsedlyatebya.xyz/indesign_free_template_company_profiii22e.pdfIn PDF document text
    • http://towufato.mywebcommunity.org/fender_passport_event_series_2_375w_powered_pa_system.pdfIn PDF document text
    • http://juzawav.iblogger.org/tazilatabadade.pdfIn PDF document text
    • http://probmake12.xyz/castle_defense_2_mod_apk_rexdlyotgs.pdfIn PDF document text
    • http://mesanezedid.mypressonline.com/fugaraverikamo.pdfIn PDF document text
    • http://vaxenovutejuzid.sportsontheweb.net/8312493840.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://be934b08-0dcc-4e2e-8de1-c3c1c32dbfab.filesusr.com/ugd/d5415a_ba712b6eacd04a2094f16d1a6ce108c7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/aws_s3_permissions_to.pdfIn PDF document text
    • https://f110cc6a-49d6-427c-9ab6-a3a4d323b004.filesusr.com/ugd/9e53d4_813d56e699e241f584c6940fa940026b.pdf?index=trueIn PDF document text
    • http://funasuruwet.epizy.com/vilokowuzuvebaba.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/network_security_engineer_jobs_in_usa.pdfIn PDF document text
    • http://fopajika.epizy.com/bivoruduxopasagoj.pdfIn PDF document text
    • https://508993f8-b81b-48eb-bc39-b0c4eecf7246.filesusr.com/ugd/205ae4_f4c780b3e55341319aa6f6d9468a2f9f.pdf?index=trueIn PDF document text
    • http://varijaponinaza.rf.gd/ez_go_golf_cart_wiring_diagram_gas_engine.pdfIn PDF document text
    • http://lexamokoxerum.atwebpages.com/jomafatip.pdfIn PDF document text
    • http://ligujizulogi.atwebpages.com/microsoft_project_2016_for_dummies_free_download.pdfIn PDF document text
    • https://ebcfae26-b4e4-4f1a-a5b2-c5bdbddc1bdf.filesusr.com/ugd/259f90_5b06e403c384467598ff6e9ea119ab1d.pdf?index=trueIn PDF document text
    • http://zitasixan.atwebpages.com/nofodefividibaduwuwoxe.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_off00026f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26F49 5312 bytes
SHA-256: d6369b2dce42c0f1b0855a2e38dde316bd0c9eb0f6995ba9173d00e00bcd4427
font_01_sfnt_off0002816d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2816D 11320 bytes
SHA-256: 31f0081d9dbb6a5da6dbf5d429cdaea39f65c9b4f4f6f507082df9696b3d9ac1

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