Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ef08d3a2b986055…

MALICIOUS

PDF

80.9 KB Created: 2021-03-23 06:02:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 922763289283f7788949db532329d38a SHA-1: 0844ea697feb7f4d95acd345a778ef502b773971 SHA-256: 8ef08d3a2b986055195008ce542cdefc1efd2cd2a3f6724fc0777aad155adaa6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a link farm on disposable hosting, designed to redirect users. The document body, though heavily obfuscated, contains text related to a movie title, likely serving as a lure. The embedded URL points to a suspicious domain, suggesting the primary goal is to redirect users to a malicious site for phishing or further payload delivery.

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://pelibifir.ru/strik?utm_term=the+spectacular+now+pelicula+completa+en+castellano PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4391303/normal_5fce04a89a5a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427105/normal_5fdae0e514924.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496605/normal_6015b5f475279.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370051/normal_5fcf1ad770d8a.pdfIn PDF document text
    • http://rowexusaje.mypressonline.com/kiplinger_s_retirement_planning_guide_2020.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/vevesesekug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jaloto/bagiru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b09b934-eec6-451a-91ff-76feb05c64b8/identifying_prepositional_phrases_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/64017473606.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/514a6d40-98a2-4434-9a6b-b3363375ceee/how_long_do_bryant_furnaces_last.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53a05e77-3bbb-4a3c-9bdb-1a8df12722f1/55295082785.pdfIn PDF document text
    • http://bitines.myartsonline.com/95267769390.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d5af80f-72af-4397-ae48-875b6f1515bd/can_samsung_s9_battery_be_replaced.pdfIn PDF document text
    • http://jadivepijuga.myartsonline.com/tigezufikidibebuzopupome.pdfIn PDF document text
    • http://galusuvojames.epizy.com/dexuton.pdfIn PDF document text
    • http://vefogisoj.epizy.com/xezuzaroledekele.pdfIn PDF document text
    • http://wizigipixe.atwebpages.com/7832275046.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d29793d6-452b-43fe-aad5-b2cbc41a88d1/tom_clancys_rainbow_six_siege_cross_platform.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ab710ab-4939-4caa-9973-2426aeecbce9/76863761381.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/incurred_but_not_reported_losses_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37456fc8-700a-46c6-a470-8f8349eb5982/photosynthesis_and_respiration_test_answer_key.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_off0000fcc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC5 5212 bytes
SHA-256: a1bf9427aa2af969016d525b0d81a0d45a6251b9faec95e768d187d0865b3c9f
font_01_sfnt_off00010e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E69 12232 bytes
SHA-256: daa491edfcdee6a16974a5b71cf984786f9be7ba68c0dedd3bf9df1c4dfd4a10

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