Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2b0d5bfca6404af…

MALICIOUS

PDF

71.4 KB Created: 2021-02-25 16:58:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 45863bb8c42cc4c433e1320e8ab9250f SHA-1: 2b4df3028d1cb5fb112c267e3c9643758983d22e SHA-256: c2b0d5bfca6404aff9bb18d20d7cff972bee9f875f4ae578e44cf340ffc93154
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=elevator%20pitch%20examples%20for%20highschool%20students In PDF document text
    • https://cdn-cms.f-static.net/uploads/4478716/normal_5fd785984459a.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/pakutonetuxisuxebofebiter.pdfIn PDF document text
    • https://mulujalopopu.weebly.com/uploads/1/3/1/4/131407089/sovusalebime.pdfIn PDF document text
    • http://rozujed.sportsontheweb.net/discipline_equals_freedom_book_depository.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/94538848539.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4506063/normal_60012186818bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472788/normal_6019870c09a08.pdfIn PDF document text
    • http://vabebimubu.iblogger.org/the_jewish_phenomenon.pdfIn PDF document text
    • https://sukaxivex.weebly.com/uploads/1/3/4/8/134895869/58f6b724681d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vaxutere.rf.gd/90867685363.pdfIn PDF document text
    • http://tiwatimab.atwebpages.com/61859218700.pdfIn PDF document text
    • http://bitediwufekoxem.epizy.com/induction_motor_control_methods.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/bajafelege.pdfIn PDF document text
    • http://sosozodazu.epizy.com/el_cuadrado_bruno_munari.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/jenn_air_double_oven_user_manual.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_off0000da18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA18 5652 bytes
SHA-256: 565fa8e034db220dc3880d12f8c983c972be3003d2f432a539a3f06687a8d415
font_01_sfnt_off0000ed33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED33 10400 bytes
SHA-256: 44b5dc4aec4b916a435f755fd71b94afcad19f4d9aee9b117f556ce544ba096b