Malicious PDF — malware analysis report

Static analysis result for SHA-256 489e552419f38875…

MALICIOUS

PDF

73.0 KB Created: 2021-01-18 18:27:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 26dfbe2a1f2df88e6221c052211d987f SHA-1: f4f9b3c24231fffcef2d19506ee9dfcc0998542f SHA-256: 489e552419f38875b3b7c0ad83d5517f4e56b5771417bff08f4970fe81b5dbae
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/123?utm_term=vygotsky+guided+participation PDF link annotation
    • https://sowuritujozefa.weebly.com/uploads/1/3/4/6/134621612/05913603119f59.pdfIn PDF document text
    • https://sixabizutobago.weebly.com/uploads/1/3/4/6/134613494/kasabaz.pdfIn PDF document text
    • https://tedipoji.weebly.com/uploads/1/3/1/4/131408178/xemugiruxotijug.pdfIn PDF document text
    • https://cdn.sqhk.co/devurekon/nQhjmje/58726875275.pdfIn PDF document text
    • https://cdn.sqhk.co/ketejeti/cqEvhdy/dragon_reborn_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vapezuwe/hibhjig/clean_virus_in_macbook_air.pdfIn PDF document text
    • https://cdn.sqhk.co/reserujaj/hgH9iic/cartoon_channels_on_dish.pdfIn PDF document text
    • https://cdn.sqhk.co/poladejug/bjagfp6/90755021215.pdfIn PDF document text
    • https://zirenujunez.weebly.com/uploads/1/3/4/4/134431605/9f2f7654ef84436.pdfIn PDF document text
    • http://tazikuruwuwozu.22web.org/43056318862.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443325/normal_5ff50abc0748b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wasaxotudulolo.epizy.com/baba_koto_din_dekhina_tomay.pdfIn PDF document text
    • http://bewebumaxof.epizy.com/kixekemef.pdfIn PDF document text
    • http://goguvero.epizy.com/turkish_march_piano_sheet_imslp.pdfIn PDF document text
    • http://jabaxuzadowepep.rf.gd/53858668266.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_off0000e00d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00D 5340 bytes
SHA-256: 3813a7bc02873f5db1811918a3639c6157edf6046d38879d5c11bdaf48920718
font_01_sfnt_off0000f25d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF25D 10968 bytes
SHA-256: 7ce7b4e4b4cb3eadf8887d81a0c2fe7a057cdde632f4b7506298017ffdcf58d7