Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b35a7516bf3a265…

MALICIOUS

PDF

64.4 KB Created: 2021-02-04 21:39:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5397e8b823b078761d1a90de4302b311 SHA-1: 9d80461494c7bcb1f65f4d106ead6183d6d9d0e7 SHA-256: 9b35a7516bf3a265c1e661760041f032375bbe70549900839d4a08099dd14032
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://baarspo.ru/aws?utm_term=are+re+are+song PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481985/normal_5fd157dd58456.pdfIn PDF document text
    • https://cdn.sqhk.co/wekajibex/jXGhahf/86705040558.pdfIn PDF document text
    • https://donezuzigomage.weebly.com/uploads/1/3/1/4/131438278/aa1ab257f.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/iiSEhiQ/xaruvalijaposid.pdfIn PDF document text
    • https://cdn.sqhk.co/xogudililavo/GQJgfjY/good_birthday_party_themes_for_11_year_olds.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457330/normal_600d5daceba13.pdfIn PDF document text
    • https://fatatarulawug.weebly.com/uploads/1/3/4/4/134474158/b644a53105e.pdfIn PDF document text
    • http://filuniguwol.22web.org/mifero.pdfIn PDF document text
    • http://naxovonukile.iblogger.org/adverse_selection_model.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382773/normal_5fd1c6838a14e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vakorizu.epizy.com/18373498678.pdfIn PDF document text
    • http://mowumaja.epizy.com/boy_names_meaning_god_answered.pdfIn PDF document text
    • http://gusosowir.rf.gd/canada_goose_langford_parka_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/98695503372.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/alien_tamil_dubbed_movie_collection.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/piwasizokekarimisufiweti.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/siwiwamuxedu.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/jugidovobazowotelokuz.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_off0000c175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC175 4812 bytes
SHA-256: 72429d9184c73f633601a5e58b80b7368704fb532b8263ab698789922e967c06
font_01_sfnt_off0000d1df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1DF 10304 bytes
SHA-256: 9563fef006aa3cc4189650fda2336ea02ba81ac187285d4ff515235a2cade07f