Malicious PDF — malware analysis report

Static analysis result for SHA-256 8114868de49fdc40…

MALICIOUS

PDF

85.0 KB Created: 2021-03-15 15:48:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 64ad30eb45c6430956a013c7c9a2918d SHA-1: 5d117df632a3701a29a7236907200453dcb13cc5 SHA-256: 8114868de49fdc405c18b96959de3ed7a9d085ae18b355c5932262cd10e00f3e
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 domains, and is flagged as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://vilenefex.ru/123?utm_term=vidmate+apps++original+wala PDF link annotation
    • http://sowoxapexemex.sportsontheweb.net/fukesapawesasevisu.pdfIn PDF document text
    • http://instapriz365.site/gobubu1xd2i.pdfIn PDF document text
    • https://cdn.sqhk.co/tokarikadez/7zijien/pineapple_pen_guy.pdfIn PDF document text
    • http://clientbluebadge.com/adaptive_oreo_icon_pack_apkzpt7a.pdfIn PDF document text
    • http://nekuwagibajese.getenjoyment.net/80085771292.pdfIn PDF document text
    • http://scriptbook.xyz/call_recorder_free_appsyj8dg.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/Mgfzf79/utopia_definition_english.pdfIn PDF document text
    • https://cdn.sqhk.co/zujomawa/iciggfb/half_heart_half_star_symbol_meaning.pdfIn PDF document text
    • http://tadajixilatu.scienceontheweb.net/pezev.pdfIn PDF document text
    • http://mufutekuson.getenjoyment.net/32408591012.pdfIn PDF document text
    • http://50offshop.info/blood_clot_forming_after_tooth_extraction3lxhf.pdfIn PDF document text
    • https://cdn.sqhk.co/daviluzabidi/uCgiCje/ruzikalulo.pdfIn PDF document text
    • https://cdn.sqhk.co/xolofiwano/cijhhgc/pewdiepie_bridge_video.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://denotepisijolib.rf.gd/apics_cscp_learning_system.pdfIn PDF document text
    • http://zokaramizixa.atwebpages.com/strength_of_materials_important_formulas.pdfIn PDF document text
    • http://dafitigare.epizy.com/membrane_bioreactor_design.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17c548b6-faac-488c-ac0b-805fa9d1dc3f/bevutiwijuwuzusig.pdfIn PDF document text
    • http://bibobega.epizy.com/hfs_uw_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e465cb5e-8325-4e61-a188-86b877401c88/peter_principle_book_depository.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61fadf7e-a7fe-4274-a8b7-f9517ad055c4/73074495440.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75d7af0-0130-41f5-b429-288a144feef5/ap_human_geography_wood_book_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f597955-81df-47af-9739-4939ed09d533/mastering_vmware_vsphere_6.5_nick_marshall.pdfIn PDF document text
    • http://kozogasivufi.myartsonline.com/best_oil_paint_for_alla_prima.pdfIn PDF document text
    • http://jaweratiz.atwebpages.com/navodaya_registration_form.pdfIn PDF document text
    • http://pavitekoruw.rf.gd/bharat_mata_ki_dj_song.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_off00011033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11033 5336 bytes
SHA-256: 2f74c2580382beb79a8df988229d50206e4699f6cb429bf346b7c0f9d612d5d1
font_01_sfnt_off00012253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12253 10568 bytes
SHA-256: 0112f0da98ec37546e6707d124ec7cb782c9d485e265eff87a5e89f3e729fa2f

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