Malicious PDF — malware analysis report

Static analysis result for SHA-256 4384d37e9609f83e…

MALICIOUS

PDF

68.6 KB Created: 2021-02-17 17:30:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: cd6ad87fa670357ba2c420c4e709057c SHA-1: f2902fd8adb1d6dc90c105ab68b427280a88a9d6 SHA-256: 4384d37e9609f83ec92cce0120a845a93b19814558214d59829c834c3dc14808
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wix?keyword=semicolon+worksheet+english+for+everyone PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4497638/normal_601feff4742d7.pdfIn PDF document text
    • https://tamaxanafe.weebly.com/uploads/1/3/1/8/131856242/rozomon-labivokokod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417046/normal_5fc7697b4a002.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447436/normal_602cff60b5fea.pdfIn PDF document text
    • http://nextauto02.ru/class_11th_biology_ncert_bookqz19b.pdfIn PDF document text
    • http://podarokinsta.site/aiag_msa_reference_manual_4th_edition5czx4.pdfIn PDF document text
    • http://idealica-italiaufficiale.website/drawpile_connection_timed_outc42du.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://laxowukuwex.epizy.com/toddler_bed_sheet_set_100_cotton.pdfIn PDF document text
    • http://jofesowevelen.epizy.com/39124369257.pdfIn PDF document text
    • http://fifusudevop.rf.gd/adidas_performance_pureboost_go_ltd.pdfIn PDF document text
    • http://nijetazum.epizy.com/40951926789.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/organic_cotton_flannel_sheets_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/tobuturibulunig.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/vanguard_ftse_250_ucits_etf_fact_sheet.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_off0000ce73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE73 5508 bytes
SHA-256: 45e49b8b334ad3dc37765af8212d519af4214b07f20b7900d3d58571afbe9df1
font_01_sfnt_off0000e129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE129 10524 bytes
SHA-256: 936f18b55a1f3213d8dd7975ba41e332710e20bec32f850bacc4c99cb0ad604f