Malicious PDF — malware analysis report

Static analysis result for SHA-256 433939eae3c27083…

MALICIOUS

PDF

72.6 KB Created: 2021-02-15 02:06:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2564555e8db35dad3f587f72f45b575b SHA-1: 17b96a4688b9063abb3b0910bf59705a348ab411 SHA-256: 433939eae3c27083cdcd01c6581a09db0af30512b2299e110eb5112e15409cde
184 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
  • 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/wix?keyword=che+guevara+a+revolutionary+life+by+jon+lee+anderson+pdf+free+download In PDF document text
    • https://cdn.sqhk.co/pesegozod/cjb81W2/solo_vpn_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fepebage/iiSu4yv/kimoxelewijus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377933/normal_5fd7c2cde3c55.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jidafamibudajir.epizy.com/angular_material_registration_form_template.pdfIn PDF document text
    • http://zuzojep.rf.gd/29631777895.pdfIn PDF document text
    • http://zaruxokogidut.epizy.com/dimufimojerazufo.pdfIn PDF document text
    • http://xidozex.epizy.com/gonamelevizufufoze.pdfIn PDF document text
    • http://jesirezajirenu.epizy.com/18840211874.pdfIn PDF document text
    • http://wepaxilex.epizy.com/vizefazufibowu.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/nutoxuvirovubusogaze.pdfIn PDF document text
    • http://robabaxagolelez.rf.gd/management_information_systems_major.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/kshatriya_full_movie_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/ample_guitar_m_vst.pdfIn PDF document text
    • http://wetedezowob.rf.gd/zajexowaf.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/business_intelligence_and_analytics_pearson.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_off0000df18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF18 5676 bytes
SHA-256: 0839fc3fff2c57dab9eb7ebc2c772e368e42b00daaaa6a0b86a44d30dff86783
font_01_sfnt_off0000f27a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27A 10064 bytes
SHA-256: d01a1e32a5ae755d041cfea4743fb79d417f6862b469c51306dc7bbc3aac7214