Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fefa2ecc17161a8…

MALICIOUS

PDF

64.1 KB Created: 2021-02-15 09:42:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 582ef66fada1c18e33060b1cba36f9d0 SHA-1: 4f065e2274740ff7802fea83fcabce151be0f6d1 SHA-256: 1fefa2ecc17161a867ab75abb0cb5d7d1b12b6e7f8b2e5ae1315aa6ac46c444e
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://jacksth.ru/123?utm_term=1998+ashrae+refrigeration+handbook+pdf PDF link annotation
    • http://copyrightviolationcenters.com/valores_de_referencia_del_volumen_plaquetario_medioq8n1b.pdfIn PDF document text
    • https://woremudof.weebly.com/uploads/1/3/4/7/134701645/zapos.pdfIn PDF document text
    • http://onenature.space/reflection_and_refraction_quizr6b1j.pdfIn PDF document text
    • http://sanezukevuzav.iblogger.org/any_video_online_iphone.pdfIn PDF document text
    • http://inmyshtangen.xyz/fitusipu3olwt.pdfIn PDF document text
    • http://copyrightsupporteds.com/atoms_bonding_and_the_periodic_tableb0xf9.pdfIn PDF document text
    • https://jipedopifuxo.weebly.com/uploads/1/3/4/0/134042804/zafevut_mujarofiledure_vaxebo.pdfIn PDF document text
    • http://about-central.com/tovofetosuxafimoruvumezqjm8.pdfIn PDF document text
    • http://hyipinvest.site/aai_tamil_movie_video_songs95xrf.pdfIn PDF document text
    • http://mignonette.space/xokibelufakanudaj8inz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481064/normal_5fd61a6ead9c2.pdfIn PDF document text
    • http://spiritstudio.ru/dasagakozh5ddo.pdfIn PDF document text
    • http://avit0.cc/greek_gods_and_goddesses_family_treehhawc.pdfIn PDF document text
    • https://fitinunajixir.weebly.com/uploads/1/3/1/6/131637477/gipoxoxasi.pdfIn PDF document text
    • http://medicinfo.online/american_standard_hvac_warrantybeodp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000bbe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBE0 5784 bytes
SHA-256: 9f56971f29d8d83d405ee51db09038a3937bd761a7da7f2d701c526e2ff294b7
font_01_sfnt_off0000cf82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF82 10564 bytes
SHA-256: c4259c26a48f7e483e11b52335707669146b7937169e3ca579018e7bd8fa73e3