Malicious PDF — malware analysis report

Static analysis result for SHA-256 c391b2898e5d7928…

MALICIOUS

PDF

72.4 KB Created: 2021-02-13 19:54:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6d96e7d841d5e502ad22d9f4878d5b99 SHA-1: 913240191320e38c12655c378b3414bd07e76a6d SHA-256: c391b2898e5d792887c6cbec3377845fd2def0ece53a853ce8ffd4f4fa422413
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=reported+speech+exercises+for+class+8+online PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4404299/normal_5ffaec143cffd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470385/normal_5fefa96eda230.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366343/normal_5fe1113a3a2c8.pdfIn PDF document text
    • http://norukirabo.iblogger.org/levidabo.pdfIn PDF document text
    • http://maletewidulebil.iblogger.org/jolejanenedakeguk.pdfIn PDF document text
    • http://xeverekenov.22web.org/embroidery_work_order_template.pdfIn PDF document text
    • http://betifogolejom.iblogger.org/protein_structure_file.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zapidijerazavot.epizy.com/59976480108.pdfIn PDF document text
    • http://lofupiwosilabo.epizy.com/21073318927.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/mozatovisilagixesesu.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/vsco_filter_guide_2019.pdfIn PDF document text
    • http://muzubakow.epizy.com/audi_a3_2008_owners_manual.pdfIn PDF document text
    • http://lobakixadob.epizy.com/free_funeral_program_template_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/consumer_reports_dishwasher_bosch.pdfIn PDF document text
    • http://ketanuviz.epizy.com/29016174446.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_off0000ddf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF8 5512 bytes
SHA-256: 47e4bd60b2af39fbf0c343f0b9f8e3df95258cf709d585e124d44988e74c021e
font_01_sfnt_off0000f0bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BC 10604 bytes
SHA-256: 1d2d5c9715ec571f4cf68995bcda5fbdd0cda0aef550615e801828f261f9f067