Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a1f11cc41f77dd4…

MALICIOUS

PDF

72.6 KB Created: 2021-02-24 21:53:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d8bc3e7918fc9d881140542dea84bd85 SHA-1: f04fec549cf1efc929b8bcbe53942f23ebcd1af6 SHA-256: 4a1f11cc41f77dd431e247d2f7191be88232604871a027379628f152e2d8b839
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://crophysi.ru/aws?utm_term=how+to+reset+radio+on+2011+jeep+grand+cherokee In PDF document text
    • https://wemodolitafuroj.weebly.com/uploads/1/3/6/0/136055174/rogilodesog.pdfIn PDF document text
    • http://kushtanash.ru/subliminal_psychology_101_free_download2rggj.pdfIn PDF document text
    • https://zekupepub.weebly.com/uploads/1/3/5/9/135992873/vulazabiwaf-tulibofufeze-fekewos.pdfIn PDF document text
    • http://iuts.space/zoxuluzupefugisuzuforanazdqq8d.pdfIn PDF document text
    • http://tehnopolis.org/newumi90uut.pdfIn PDF document text
    • http://e-devletturkiyeaidatsistemimgovtr.com/51756502925176jm.pdfIn PDF document text
    • https://daniwevuwawudo.weebly.com/uploads/1/3/4/8/134849628/1432292.pdfIn PDF document text
    • http://reznitskygallery.com/certificado_de_origen_tlcan_formato_en_ingles2jsca.pdfIn PDF document text
    • http://cosmosqrab.online/13238340152vg3z0.pdfIn PDF document text
    • http://betafiwes.iblogger.org/sujevikegosapitozed.pdfIn PDF document text
    • http://potolkilife.ru/chrysler_sebring_2006_repair_manualwwv2u.pdfIn PDF document text
    • http://avto-document.site/descargar_the_king_of_fighters_2002_super_magic_plus_para_androide469c.pdfIn PDF document text
    • https://cdn.sqhk.co/derepinejabi/jfbje2o/77911260116.pdfIn PDF document text
    • http://esclub.info/zevukovojoxifedchcg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lofadezowudekeg.epizy.com/sickle_cell_disease_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/svu_episode_guide_season_8.pdfIn PDF document text
    • http://rusuditet.epizy.com/chambers_of_xeric_points_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/proceso_de_transformacin_de_materia_y_energa_en_los_seres_vivos.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_off0000dd90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD90 5824 bytes
SHA-256: 3f23d94541417e637587fba0326749f18a412759f752e547cb9ec55c1d860163
font_01_sfnt_off0000f174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF174 10572 bytes
SHA-256: 32ade21ad64b1e3e1c2a88cc0bfb217aed8012a6e0d1f45476fb698488c0b5ed