Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5958d85544ea32b…

MALICIOUS

PDF

64.0 KB Created: 2021-02-21 10:37:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c8c4015622165cb1dbc8be99b4e5e87f SHA-1: de95054bad78da8783065d732ea0fcad3ec20dd0 SHA-256: f5958d85544ea32b3ed1aea40226b866122cd62d30b791529c61bb0cfecc44b1
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=tug+the+table+unblocked+66 In PDF document text
    • http://phrensy.co/in_1867_this_was_considered_canadas_national_sportl71yd.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/gghjn7w/retro_quiz_classic_video_games_trivia.pdfIn PDF document text
    • http://leqqurint.online/122374046496e183.pdfIn PDF document text
    • https://cdn.sqhk.co/nilamemiw/w3hcYaL/plants_vs_zombies_2_wiki.pdfIn PDF document text
    • https://sowematawenuw.weebly.com/uploads/1/3/1/1/131164153/7677425b.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/S8KrL4y/ark_ragnarok_alpha_deathworm_spawn.pdfIn PDF document text
    • https://dusomekekonipa.weebly.com/uploads/1/3/4/5/134580960/26f252b4.pdfIn PDF document text
    • https://leditolovon.weebly.com/uploads/1/3/2/6/132682688/rovivomitivitomodoku.pdfIn PDF document text
    • https://xinusikavafomi.weebly.com/uploads/1/3/4/3/134353784/6c1cbb.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/wefadep/cash_advance_form_company.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/57675988876.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/xowofoturojunuda.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/crown_lacquer_thinner_sds_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/zitupen.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/oxford_dictionary_word_of_the_year_2016.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_off0000bf72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF72 5232 bytes
SHA-256: aded5454dd6193a8c00c4ee84c01ca7ca776413626a89b6587fda25d91f489cc
font_01_sfnt_off0000d13e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13E 9984 bytes
SHA-256: ad94a66ac199ad18abd25e7bf45df84362f06c03a0a8d9b81b34cbc7f0c22f2b