Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff48428630942f12…

MALICIOUS

PDF

70.9 KB Created: 2021-02-21 23:40:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: cbeb95f524da490fa5cdd598ab15da22 SHA-1: 16a81221a8f93c3a860a278dbb3911f4c61b19e1 SHA-256: ff48428630942f127604d92275761cc5e536340804f7659eea2128ddec9a3468
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://maypoin.ru/wb?keyword=todos%20los%20nombres%20de%20jesus%20y%20su%20significado PDF link annotation
    • http://afracheat6.xyz/kenuniwodufedorofimogijij7o2qj.pdfIn PDF document text
    • https://fatitabo.weebly.com/uploads/1/3/4/7/134757356/risoxenar-jipuwepivodu-wapuwebolupate-daduxubus.pdfIn PDF document text
    • https://woxopipuwesubaj.weebly.com/uploads/1/3/1/4/131453061/1203942.pdfIn PDF document text
    • https://webunufilijamo.weebly.com/uploads/1/3/4/6/134677486/1006448.pdfIn PDF document text
    • http://marketop.club/kanisapotugulemufonajesoq02ar.pdfIn PDF document text
    • https://lexawuvake.weebly.com/uploads/1/3/4/6/134610488/xarolak-xenum-patoramadetu-muruseb.pdfIn PDF document text
    • http://remawunusubo.22web.org/applied_science.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451220/normal_5ffe9b85a8b67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409425/normal_5fe8725c0f518.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486199/normal_6025c0bbc1ef6.pdfIn PDF document text
    • http://tukofiw.22web.org/vasenumazonurujiluvimiv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sizixezaratog.rf.gd/74446586009.pdfIn PDF document text
    • http://direpedokelazal.rf.gd/padopulubevikuputuk.pdfIn PDF document text
    • http://mosokiwilag.rf.gd/film_brick_mansion_sub_indo.pdfIn PDF document text
    • http://pofuwumol.rf.gd/how_to_write_a_memorandum_letter.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_off0000d44e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD44E 5608 bytes
SHA-256: 364397db498759c2be2fa6f3d4db49f33fe55c6cc58aab907f69c058cd3364ba
font_01_sfnt_off0000e755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE755 11648 bytes
SHA-256: 7e04698c66b463c001e76fcbe6ad93d01b9253d659b4a10fce2b317bd5920b46