Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1d4d51803f4af7e…

MALICIOUS

PDF

70.0 KB Created: 2021-02-22 01:44:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c3f6d05fa42c3b44d34fce33a3e12b5d SHA-1: 5ddef312bcdefde544a91521c208b046ef462556 SHA-256: a1d4d51803f4af7ecc9f3380fcc1c7bd3e62934896ea442df65cbdf6bc67148b
126 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
  • 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=cuisinart+convection+toaster+oven+broiler+recipes PDF link annotation
    • https://cdn.sqhk.co/devisofage/2vArija/13856940289.pdfIn PDF document text
    • http://igme.site/946795582032nedx.pdfIn PDF document text
    • https://vufobuvi.weebly.com/uploads/1/3/1/1/131163959/felikufed-pamarif-karunawebugugi.pdfIn PDF document text
    • http://fresh-ita.fun/5879903206a88bm.pdfIn PDF document text
    • http://mklhhhh.space/sinoxasubapavupido4gb2t.pdfIn PDF document text
    • http://rewita.fun/context_clues_worksheets_middle_school_printablepv8ea.pdfIn PDF document text
    • https://kixorixoti.weebly.com/uploads/1/3/0/7/130740187/vipif.pdfIn PDF document text
    • http://olymptrade.buzz/81012508704v1kjn.pdfIn PDF document text
    • http://nubolats.xyz/english_grammar_correction_applicationsycr7.pdfIn PDF document text
    • http://coolvdomaion.online/bagupilawujekazazipipufaze7cp5.pdfIn PDF document text
    • https://kivepuwepadile.weebly.com/uploads/1/3/4/3/134392404/xupozurof.pdfIn PDF document text
    • http://1offpark.xyz/retajinumivtz8x8.pdfIn PDF document text
    • https://muzuwetabez.weebly.com/uploads/1/3/1/4/131483468/danaduwi.pdfIn PDF document text
    • http://shopmzm.site/bose_sounddock_digital_music_system_for_ipod_white_manualiaumv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lakelasu.rf.gd/51441603495.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_off0000d567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD567 5032 bytes
SHA-256: 17ce8529abe20fd7a12d48e723e1a5e6d1ee092b150b8ff70e5b510201c6b9ea
font_01_sfnt_off0000e690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE690 10732 bytes
SHA-256: 35b06f7b683a7014a6411d878385329f8941be4ac8a4602830579ce71592129c