Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9adb3bd2a92ff1…

MALICIOUS

PDF

84.4 KB Created: 2021-03-21 04:00:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 0ec02ee2d62e220228acb8d4f7792c0b SHA-1: 34be2da421ee00a8db1584daa6742689302b95f8 SHA-256: ed9adb3bd2a92ff1c97fc4d57f692e7f0b548bc5552f9e670290671c4f0a58a1
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 phishing or trojan threat. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The presence of PDF-specific heuristics like PDF_SEO_DISPOSABLE_LINK_FARM further supports this. No scripts were extracted, but the overall structure and URL distribution point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://leonvi.ru/wix?keyword=fe+invisible+script+v3rm PDF link annotation
    • http://jilet1.club/13678780265ihygn.pdfIn PDF document text
    • http://fitatuvepejozo.sportsontheweb.net/nilarez.pdfIn PDF document text
    • http://mybiol.site/texas_instruments_ti_30xb_multiview_scientific_calculator_manualru4oj.pdfIn PDF document text
    • http://erogan-columbia.site/fenodopebilejerdbazj.pdfIn PDF document text
    • http://onlyforyou.space/lagogekaxeleroniriwurijr48q.pdfIn PDF document text
    • http://yourlivehelp.com/69641021870wf4ho.pdfIn PDF document text
    • https://zonanasuwovu.weebly.com/uploads/1/3/2/6/132683154/96b59.pdfIn PDF document text
    • http://kapabifidi.sportsontheweb.net/cap_theorem_nosql.pdfIn PDF document text
    • http://madoxorijegobe.sportsontheweb.net/62959331615.pdfIn PDF document text
    • http://cmbespaceclient.xyz/student_solution_manual_for_mathematical_methods_for_physics_and_engineering_third_edition6m9tl.pdfIn PDF document text
    • http://pobadabodoz.scienceontheweb.net/ccna_book.pdfIn PDF document text
    • https://katopogovalasa.weebly.com/uploads/1/3/5/4/135401177/sinol-bugizelotud.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/gepamigimozo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a54cdaa-314c-4761-bc89-6743fbacbd0a/39456980121.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1146afb2-db8c-456b-bdde-4ef721be6bf3/cyberpower_cp1500avrlcd_intelligent_lcd_ups_system_1500va_900w_12_outlets_avr_mini-tower_black.pdfIn PDF document text
    • http://badamowafe.onlinewebshop.net/logitech_z_2300_wired_remote_pinout.pdfIn PDF document text
    • http://fatavetotujel.onlinewebshop.net/94344965853.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d91acbe-5a16-42ec-83dd-e91a2bdd3764/twilight_breaking_dawn_part_3.pdfIn PDF document text
    • http://fotizojorirepel.onlinewebshop.net/bagasse_products.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bb001b4-baea-4113-a274-958660eee659/vojexeduvobuvok.pdfIn PDF document text
    • http://lolunoxij.myartsonline.com/automobile_technology_textbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cce3ebee-96a3-49e5-806c-c27d851afefe/pagisexut.pdfIn PDF document text
    • http://guwaxilajoxeza.onlinewebshop.net/woxogujuloruduzaxanibuzut.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_off000103e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E4 5188 bytes
SHA-256: e110fa4b9ed99f49411a16f0cf73397723186afc173f0d876a8c58052fb8db16
font_01_sfnt_off0001157d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1157D 15296 bytes
SHA-256: 99671740b1104cd2ef1182ee040c33817cc6f35ffecd23372243bf9e91f19355

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