Malicious PDF — malware analysis report

Static analysis result for SHA-256 28d41ead76681221…

MALICIOUS

PDF

73.2 KB Created: 2021-02-28 17:25:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9ee086b2b3372f269a724a26f7466718 SHA-1: 3eaa4f62f8ae6cab0fd24103ce45ac3d217e35c6 SHA-256: 28d41ead76681221313cfdae62883ff1a8bb37bb92f8175c01312cc157ebb692
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://resalured.ru/award?keyword=2019+jeep+grand+cherokee+factory+service+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449615/normal_601261a3cca7a.pdfIn PDF document text
    • http://yarrebitteh.online/accident_prevention_in_the_home_worksheets5woda.pdfIn PDF document text
    • http://maroron.22web.org/devilsaur_farming_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/mugolino/fhhb9hf/xesetasorivikapo.pdfIn PDF document text
    • http://volosaty100.xyz/mefeloxur9dhh2.pdfIn PDF document text
    • http://tricitysikhs.com/what_does_the_bible_say_about_lonelinessxstvo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485693/normal_60377e81b38f2.pdfIn PDF document text
    • http://ig-copyrightviolation.com/c_language_tutorial_pointdiezu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503525/normal_602ff61956e5f.pdfIn PDF document text
    • https://bopugokux.weebly.com/uploads/1/3/4/9/134901566/pugedaxibas_wugogomofogal_tuxuvowu.pdfIn PDF document text
    • https://bunosepe.weebly.com/uploads/1/3/1/3/131379858/5a406.pdfIn PDF document text
    • https://vizodejow.weebly.com/uploads/1/3/4/3/134356937/3601479.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465149/normal_5fe8f716b5577.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d52a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD52A 6260 bytes
SHA-256: 4821ff7e1295cbd0775e61e5ab11fcbe0fdb06b9aebfceb0feff90e4843eafd4
font_01_sfnt_off0000ea6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6E 13716 bytes
SHA-256: 21c2f2f325196a3577791c6744e275909fb21a62848baf1c83d5ccfc23afd6e1