Malicious PDF — malware analysis report

Static analysis result for SHA-256 19661c216b9b5e75…

MALICIOUS

PDF

67.8 KB Created: 2021-01-27 11:57:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 163d0efa9ddef63ea34e55b4885f328e SHA-1: 68b92616dfe2e39e272ad4c2bd3a124652e623e5 SHA-256: 19661c216b9b5e75a477fb804aaa8c2072c2fe24f261a025cdb608e49c28b324
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/123?utm_term=no+manches+frida+2+full+movie+free In PDF document text
    • https://sobopagugakevul.weebly.com/uploads/1/3/4/8/134881985/2d0af9055.pdfIn PDF document text
    • http://ihsteam.ru/tolokesilaludj6b69.pdfIn PDF document text
    • http://zoomita.space/grim_soul_dark_fantasy_survival_apk_mod4f4c1.pdfIn PDF document text
    • http://pemutoguxo.66ghz.com/sample_incident_report_for_tardiness.pdfIn PDF document text
    • http://ag-management.space/all_recipes_baked_potato_casserolep7toj.pdfIn PDF document text
    • http://virona.org/on_my_block_cast_spooky_brotherab09c.pdfIn PDF document text
    • https://cdn.sqhk.co/lotazoza/hYgjiiB/pokemon_go_jolteon_without_name_trick.pdfIn PDF document text
    • https://sunajekivogemaz.weebly.com/uploads/1/3/4/8/134895881/347f6f51c74.pdfIn PDF document text
    • https://varudigenaka.weebly.com/uploads/1/3/4/5/134597471/nigemufapadudep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://riwexakax.epizy.com/minecraft_lenov._ru.pdfIn PDF document text
    • http://xegilejefaga.epizy.com/31248005419.pdfIn PDF document text
    • http://jabelakejirer.epizy.com/80048667980.pdfIn PDF document text
    • http://zatafefot.rf.gd/notulovejizedaru.pdfIn PDF document text
    • http://bovifuxabobi.epizy.com/zerapesopasukesonaxugu.pdfIn PDF document text
    • http://zetitovafe.rf.gd/creative_thinking_images.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_off0000c856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC856 5420 bytes
SHA-256: a7985ed832d3a8e03264f15ab208808f264946cf55968dc2bf0b962f2b18d828
font_01_sfnt_off0000daa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA7 11452 bytes
SHA-256: 6e45867d26f40499bba2ea660d0052b848fa9c79a235f9e446bdc433f25dcdb0