Malicious PDF — malware analysis report

Static analysis result for SHA-256 657c070ba0fbfb7d…

MALICIOUS

PDF

69.8 KB Created: 2021-03-04 18:43:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9e941cb16419e2f0a1f7e3e49d3efc64 SHA-1: 225c951f92624865a091350cd68ab5828b87ba56 SHA-256: 657c070ba0fbfb7d50d9578cfa8947384006b69be752271d52bb6c0f382c69fc
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://resalured.ru/award?keyword=scarlett+solo+vs+2i4 PDF link annotation
    • https://zutafagufagupak.weebly.com/uploads/1/3/4/2/134235067/fipinozi_negoru_mezov_babumutopupiz.pdfIn PDF document text
    • http://ylyn.ru/letter_f_worksheets_for_preschoolbwt97.pdfIn PDF document text
    • http://copyrightsupporteds.com/frases_para_jugar_telefono_descompuesppbc.pdfIn PDF document text
    • https://tubadelemifevit.weebly.com/uploads/1/3/4/5/134509228/kadetamibuxu.pdfIn PDF document text
    • https://bibixofepo.weebly.com/uploads/1/3/4/2/134235383/borosif.pdfIn PDF document text
    • https://jurujixomegisi.weebly.com/uploads/1/3/4/7/134745805/6b62df8e71.pdfIn PDF document text
    • http://kushtanash.ru/cisco_finesse_call_reportingll1ob.pdfIn PDF document text
    • https://nikulagoronol.weebly.com/uploads/1/3/2/3/132303117/dcb97e5.pdfIn PDF document text
    • http://m-ryanaf.site/5301606627668ktz.pdfIn PDF document text
    • https://wogefusupe.weebly.com/uploads/1/3/0/7/130740138/kovedamasatakel.pdfIn PDF document text
    • https://jupaxegusuwe.weebly.com/uploads/1/3/5/3/135389123/deworede.pdfIn PDF document text
    • http://subfamjtii.site/3d_pixel_art_editor_onlinehnvuy.pdfIn PDF document text
    • https://sibafuguwo.weebly.com/uploads/1/3/4/6/134679660/naxobilibab-nujezipusonumi-gelejivef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7de9aba0-73fa-4181-b4b2-5e5561e159f8/nevim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a54357a3-1ffc-4026-8e1e-aac5ab8bfb84/jatigenapagomibogeliri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c78b6de-ce05-49e5-85e0-d3e215af5791/sat_subject_test_scores_for_mit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40fcd97d-8cb1-4d5b-b8bf-2bd4520bc917/why_do_we_use_semi_log_graph_paper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ba4b51d-7fb7-4b92-af52-3919aa24bb50/drug_calculations_made_incredibly_easy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7a9b177-26f8-4381-90bf-8cbe1a24d229/is_warranty_forever_worth_it.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cc7d76c-b222-4979-a79b-6cdc38f982f1/hp_envy_4500_printer_help.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67508fc3-df53-4e43-a3a4-e763787762a7/what_are_2_examples_of_incentives.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/753b2bac-7597-4bd2-b661-379e594d7785/what_lancing_device_works_with_freestyle_lancets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f30f5a20-3c60-4acd-b1fc-1546cfa6376a/32059890096.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca4fbd34-f3a2-4001-bc7b-bb17f87a11a7/xigilagawubafit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cf28ba0-ed90-4628-9471-e72d1ee7fc6d/aprendizaje_basado_en_proyectos_ejemplos_biologa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d4e514d-025a-447d-a899-db4dc5b14b4a/pigeguviwuvukidovava.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_off0000d30c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD30C 5176 bytes
SHA-256: 0b10c24acfd163ba36ecf23cc2452537ac3bcf6283a4a1c5d169b659a2090926
font_01_sfnt_off0000e4c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C6 10828 bytes
SHA-256: f0ba622abd09f10e557ba2687e322d50f3e7cf3de2e1a43df69912f06745c1f4