Malicious PDF — malware analysis report

Static analysis result for SHA-256 25dc45876f4a5eec…

MALICIOUS

PDF

78.4 KB Created: 2021-03-03 15:16:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 638f695efaee8d3857dc48229cdef64b SHA-1: dd3d3a778a283ccefa9da068120ea79f3cee215d SHA-256: 25dc45876f4a5eecd6e0938cb87bde4ef90cc9377db2c8e79c38d86038b98307
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/aws?utm_term=briggs+and+stratton+4+cycle+engine+oil+msds PDF link annotation
    • http://vbnmcxz.xyz/schaums_outline_of_college_physics_9th_ed_solution_manual1dahh.pdfIn PDF document text
    • http://moderivapotilos.22web.org/feh_hm_farming_guide.pdfIn PDF document text
    • https://zusifupovososix.weebly.com/uploads/1/3/2/6/132680896/fojevunojebiki_makorosa.pdfIn PDF document text
    • http://amsidgi.xyz/chuzzle_2_mindbender_solutions0c4zs.pdfIn PDF document text
    • http://matepiruzozu.iblogger.org/ftse_100_chart_interactive.pdfIn PDF document text
    • http://sdfafq.info/why_finland_education_system_is_the_best4nokt.pdfIn PDF document text
    • http://tamakar.xyz/cooking_mama_online_unblockedwnfa8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384832/normal_6013e652854dc.pdfIn PDF document text
    • http://pulemovidake.22web.org/whatsapp_gb_telecharger_apk.pdfIn PDF document text
    • http://wexixexebasober.22web.org/bewenatetufuxunir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415052/normal_601dbe822752e.pdfIn PDF document text
    • http://xokewekababawa.22web.org/74685306899.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kisirurozuwori.rf.gd/subway_surfers_hile_indir_2019.pdfIn PDF document text
    • http://suzuzozadigij.epizy.com/dazijut.pdfIn PDF document text
    • http://zitawajizotifam.epizy.com/venovusadudajusavo.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_off0000f52d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF52D 5500 bytes
SHA-256: b7f4f823ff84f2af9f7187e67aabb596096664ff79d5153b3b3c8ab1c7dfbd50
font_01_sfnt_off000107de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107DE 10736 bytes
SHA-256: f9f2f4669fd439b1ff20d524593e4b772c26b2ebdbc185cd060500ce2cf975eb