Malicious PDF — malware analysis report

Static analysis result for SHA-256 c25cbd91a184366d…

MALICIOUS

PDF

69.5 KB Created: 2021-02-27 16:40:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: af8f188eeed20de1cd90860357c7fc8e SHA-1: 93a6fa7080d45d45049d49dd464f2365373a42b6 SHA-256: c25cbd91a184366db643afeae24eae652588537f7241138440ac79ae656f7941
126 Risk Score

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://mezovuduw.ru/award?keyword=walt+whitman+high+school+calendar PDF link annotation
    • https://wudajelenap.weebly.com/uploads/1/3/4/4/134470879/tatixo-puluzasevonixow-bobomapujuk-pujela.pdfIn PDF document text
    • https://defuboxuzunusam.weebly.com/uploads/1/3/3/9/133986960/sifidamatowawijagaz.pdfIn PDF document text
    • https://cdn.sqhk.co/xivovido/LakTChf/binasovafeb.pdfIn PDF document text
    • https://minaraxu.weebly.com/uploads/1/3/4/7/134765114/901721.pdfIn PDF document text
    • https://cdn.sqhk.co/nilofixogezu/jibhgkh/dorelotuvunuwowowuwebag.pdfIn PDF document text
    • http://jurelireroxux.22web.org/93541504605.pdfIn PDF document text
    • https://rurefisofe.weebly.com/uploads/1/3/5/3/135325463/1744029.pdfIn PDF document text
    • https://cdn.sqhk.co/zifeduwa/bia6cJo/4321464679.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zikefekumir.epizy.com/dolorokixinokanudajalo.pdfIn PDF document text
    • http://jikirukuda.rf.gd/linen_sheets_king_set.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/20508106442.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/plastic_sheeting_ne_demek.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/beyond_compare_excel_plugin.pdfIn PDF document text
    • http://vopepogam.rf.gd/reneda.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_off0000d36d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD36D 5460 bytes
SHA-256: a783873aab7e6d0ea3ec2a59c6c736f5d58dafec2106c4fc34d42cc7f12fe80b
font_01_sfnt_off0000e5e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E7 10372 bytes
SHA-256: d0553464b99b508ac240d745eb47c6d84e2874220aa2f288a7cd594234fecb57