Malicious PDF — malware analysis report

Static analysis result for SHA-256 0af0bf1bafbc9839…

MALICIOUS

PDF

69.4 KB Created: 2021-03-07 16:40:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8c308cf6a902146152d7751de697139f SHA-1: 8342dcb7961937a02fdddc8b7ddf0aa7eace0152 SHA-256: 0af0bf1bafbc9839f7d10c86245c60ebca9b60f82ebcfb85b39859e66993a61d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/award?keyword=craftsman+edger+blade+guard+replacement PDF link annotation
    • https://kowedeta.weebly.com/uploads/1/3/0/7/130775164/winupiti.pdfIn PDF document text
    • https://voxonororipesap.weebly.com/uploads/1/3/5/3/135383222/2888117.pdfIn PDF document text
    • https://cdn.sqhk.co/nojedajoze/jn0UhiD/13682734405.pdfIn PDF document text
    • http://zodelem.mygamesonline.org/transition_integrity_project_npr.pdfIn PDF document text
    • http://vazawujuzu.sportsontheweb.net/lafemogidelotafogizib.pdfIn PDF document text
    • http://nidewopovuwubo.mypressonline.com/dirt_devil_stick_vacuum_walmart_canada.pdfIn PDF document text
    • https://pinozawekik.weebly.com/uploads/1/3/4/5/134589254/dunekikafefajolozow.pdfIn PDF document text
    • http://fituxem.sportsontheweb.net/world_map_continents_black_and_white.pdfIn PDF document text
    • http://zomolejefej.mywebcommunity.org/the_living_christ_printable.pdfIn PDF document text
    • https://cdn.sqhk.co/pawekenu/LUjiiio/electronic_music_production_schools_in_canada.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://013c3ecd-17dd-4738-ad87-554153c764a5.filesusr.com/ugd/36f25b_61036769e8ce44cd9f2bae2cfa8f041d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b728169b-8abd-41f9-b537-99a0f231168f/penomirofitovu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b97b2df2-70f0-48f3-8588-8a2dbe55883c/85821695288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a86dc48-cb40-4549-ad61-b4ffd985b5d2/apple_tv_3._generation_app_store.pdfIn PDF document text
    • https://91c7bc9f-df77-4dbd-ae51-8bcf521f3e61.filesusr.com/ugd/1df9ea_c86f7ee0a66b403499ef41bff5961f6e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/502bbeaf-85c0-4e45-afbe-9aad83d68c9a/information_systems_engineering_vs_computer_science.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cfffc46-8865-403b-abe5-20d73f9b6a7e/35897952310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb33656e-2770-4bad-b1a1-2ec7dc2d5679/danby_designer_mini_fridge.pdfIn PDF document text
    • https://9d1e48ad-bcd7-4831-9b7b-7108443a63b6.filesusr.com/ugd/136d07_7fd93e5b849242e6b98eef3e6b98cd62.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5871cf4-88b4-4032-add3-445d4ab0d86d/gedosuze.pdfIn PDF document text
    • https://f85e9a30-dbb9-40fd-a66d-53bd7daafe07.filesusr.com/ugd/1b9faa_08bbc420d5764500a172eb93ad54cfcb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b83b2ae-2b71-471d-92b2-bec94ee438fa/matlab_simulink_tutorial_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/215bc758-ba9f-4ea5-bf9d-6767d18dda5c/16128380993.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/689cd3a2-1df8-40b0-acb5-3024b51d8316/29319499036.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_off0000d1c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C6 5520 bytes
SHA-256: a7496751beaabc16288be67bd3685f3d4bf67fc1d57a6a05912ce31bc267858e
font_01_sfnt_off0000e470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE470 9804 bytes
SHA-256: 6841c8b5f98c13745824fd824fc5e841c86e7cc29fa2c4cd6c3832946464c0fe