Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed24e0b3eaa1c820…

MALICIOUS

PDF

75.8 KB Created: 2021-04-04 17:53:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: cb4f6c42deb911f5e9cc9ecb9b7a261e SHA-1: a053449528ef4e59335c2e772b58f270b0c023c9 SHA-256: ed24e0b3eaa1c8200bbd828b6ea61838698e73a75649142b09a5640ad3db0454
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 by ML classifiers and ClamAV as malicious phishing content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high likelihood of phishing or malicious redirection. The document body, though heavily obfuscated, suggests a lure related to a "2014 harley davidson touring owners manual", likely to trick users into visiting a malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/strik?utm_term=2014+harley+davidson+touring+owners+manual PDF link annotation
    • http://vemasujananexu.22web.org/58773125467.pdfIn PDF document text
    • http://galerelus.22web.org/verbos_en_ingles_presente_y_pasado_regulares.pdfIn PDF document text
    • http://temulisufijib.22web.org/kindle_fire_7_user_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/hghhclS/how_to_make_strawberry_jam_filled_cupcakes.pdfIn PDF document text
    • http://rasipafus.getenjoyment.net/wuwokufarevonitek.pdfIn PDF document text
    • https://cdn.sqhk.co/tozegatopaxu/rJjihgf/human_resource_management_definition_business_dictionary.pdfIn PDF document text
    • http://giwitijudaleka.mygamesonline.org/aaalac_program_description.pdfIn PDF document text
    • http://lebedugipul.mywebcommunity.org/learn_russian_book.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/VyJr5Hu/tajasu.pdfIn PDF document text
    • https://cdn.sqhk.co/xupodafib/VIhhhhD/54789574130.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wuviwalot.rf.gd/nonibideku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a7dd60b-0be3-450b-a353-5b01e99ccea1/total_surface_area_of_open_box.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/344eb0a3-fb1f-42cc-bdac-6456753a056f/lolugopoditazaludojutimon.pdfIn PDF document text
    • http://zarusorujot.epizy.com/68174364861.pdfIn PDF document text
    • http://famuruvif.epizy.com/which_medicaid_health_plan_is_the_best_in_michigan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82164905-0451-46e9-abc3-7bbac8392c4f/bonitiwaj.pdfIn PDF document text
    • http://samajusinifako.atwebpages.com/biblia_lenguaje_actual_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0edcdc91-8d7e-4f44-b656-ac166ea5b06b/xefamebitulusezevamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1addeb3d-0abe-4c5b-860c-e18e6ff36946/66027225221.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b69607f-6ebb-450c-aecb-323b373fafb5/the_darkest_minds_2_full_movie_release_date.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_off0000e9ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9EA 5812 bytes
SHA-256: 90ba8c346ac5aad2ef24aa60d03402f18fdd866d8ec843079e3c116233a5b539
font_01_sfnt_off0000fdac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDAC 10536 bytes
SHA-256: be912e0b99697809b92085d24859354fa4882500aabddce5900f2b7e8783bfca

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