Malicious PDF — malware analysis report

Static analysis result for SHA-256 519d37aaab561069…

MALICIOUS

PDF

71.5 KB Created: 2021-03-03 07:43:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c562e5fd12c3053ff7511c060a259bc9 SHA-1: 6c8bf03435d7826009e9e8dc02b7e774abf1e880 SHA-256: 519d37aaab561069ae736e1472345dadffd44259a4a22d3b4f1a4f86faa27899
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://nipisod.ru/award?keyword=nextbook+ares+8a+stuck+on+boot+screen PDF link annotation
    • http://hytri.com/nikupuvemozitipexazowemomrx435.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxapivasif/fufjiD7/quex_maize_maze_2020.pdfIn PDF document text
    • http://legugoboxebepe.22web.org/good_food_guide_voucher_tasmania.pdfIn PDF document text
    • https://mifevulesitiz.weebly.com/uploads/1/3/5/3/135321383/zasaxige-tejegiwunogek.pdfIn PDF document text
    • https://rulorakaduf.weebly.com/uploads/1/3/4/4/134480735/xupiwikevun.pdfIn PDF document text
    • https://sewimewomem.weebly.com/uploads/1/3/5/3/135323120/9660660.pdfIn PDF document text
    • http://kavelizopepi.mywebcommunity.org/63007454732.pdfIn PDF document text
    • http://msertis.xyz/felekurigibarubinopaxako54tma.pdfIn PDF document text
    • http://mobile-media.moscow/monitor_cardiaco_portatil_precio21yn2.pdfIn PDF document text
    • http://gutagige.sportsontheweb.net/how_do_i_track_a_usps_letter.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/visijosara.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/sugel.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/send_email_template_outlook_2010.pdfIn PDF document text
    • http://tawazowifow.rf.gd/8256081228.pdfIn PDF document text
    • http://tososite.onlinewebshop.net/stanley_45_combination_plane_parts.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_off0000dc57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC57 5196 bytes
SHA-256: f03c5e3f7eae2892205fef14060b7763ec099045023de65a9a715c20dd9b7f42
font_01_sfnt_off0000ee1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1A 10668 bytes
SHA-256: b90ef4e139631b2b90ae768c88287d949f3871e90ff1cd2aa4b738dc66f2f11c