Malicious PDF — malware analysis report

Static analysis result for SHA-256 15250a51e948f23f…

MALICIOUS

PDF

69.7 KB Created: 2021-02-24 19:00:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 9e8b4646a91587e0b8e9a742d2fda2e5 SHA-1: 8d4d1f0de7c66f7311edacfdd0b02fd7f13666ec SHA-256: 15250a51e948f23f592e62648e3c5d6876e7c46a15e6fa17b9d8d2f8796f2f56
184 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
  • 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/award?keyword=plc+programming+basics+books In PDF document text
    • https://static.s123-cdn-static.com/uploads/4473049/normal_5ff0c483b5aa5.pdfIn PDF document text
    • http://helpverifybadges.com/turezonuleravokodolisuvu5nofw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500201/normal_5fdb1e93b4886.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424405/normal_5ff7d0af393fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403428/normal_602cb6718f2fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389606/normal_600df756f2a3e.pdfIn PDF document text
    • http://discount50it.pro/les_cestodesqkwmc.pdfIn PDF document text
    • http://design-kvartira.info/acordes_bemoles_para_pianocltea.pdfIn PDF document text
    • http://bonusiotsbera.online/bifadiwenozu3vv07.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gogewarixisude.epizy.com/bosch_security_rps_software.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/skin_soft_tissue_infections_idsa_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/xin_c_o_form_b.pdfIn PDF document text
    • http://lonidur.epizy.com/peginamopa.pdfIn PDF document text
    • http://punugituk.epizy.com/jabap.pdfIn PDF document text
    • http://gepuwuvezu.epizy.com/icomania_quiz_answers_level_27.pdfIn PDF document text
    • http://vowefaxi.epizy.com/69275039810.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/film_centurion_2010_subtitle_indonesia.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/karvy_mf_common_application_form.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_off0000d471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD471 5460 bytes
SHA-256: 675add42094dc24db9b595a397359c4d4923355134304a540e6d5ac7533918f9
font_01_sfnt_off0000e6ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EC 10252 bytes
SHA-256: 2a719ac386515ba462c8455219a828252d89b449f35f5a94fc81a754abde3ad5