Malicious PDF — malware analysis report

Static analysis result for SHA-256 60f1868d952031b4…

MALICIOUS

PDF

72.9 KB Created: 2021-02-21 12:14:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a8dd21fb83328e0b648ede64f57c10ae SHA-1: 3e9a360be6534823e8e6d07543309b2e8669632c SHA-256: 60f1868d952031b450a902be25763eb4e09b8ecaebac5546ff464628f45c9345
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=lehigh+bursar+worksheet+spring+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484821/normal_601643b8654ae.pdfIn PDF document text
    • https://rizenuwav.weebly.com/uploads/1/3/4/3/134335920/jamup-munitotatatusir-kebakolexevexo-zirazutazupon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420917/normal_5fe971803d656.pdfIn PDF document text
    • https://fekawuzode.weebly.com/uploads/1/3/5/9/135993312/384c2ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454965/normal_600ca8354ea65.pdfIn PDF document text
    • https://vimexizud.weebly.com/uploads/1/3/4/7/134755563/3370497.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367952/normal_5fe3bcdeaf3cd.pdfIn PDF document text
    • https://lakafoxure.weebly.com/uploads/1/3/4/2/134266374/wupebug.pdfIn PDF document text
    • http://xivixevikid.iblogger.org/debija.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484639/normal_5ff8c699b1959.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368736/normal_6012275517d38.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449009/normal_5ff0b3ad0c005.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/gazijewevan/analise_fundamentalista_de_aes.pdfIn PDF document text
    • https://s3.amazonaws.com/jupoti/aparajita_tumi_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/fejoretukamubogewew.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/xakirizabimipigutu.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_off0000e041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE041 5768 bytes
SHA-256: 1a82faacb0762f4811eefbdcdbbe58a0b62c1f13d1ce8a3e629323f54407b9f6
font_01_sfnt_off0000f3f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F6 10152 bytes
SHA-256: 03fc63286858c368364d5bc6a9fabcac1068c7d010115aa84c95cfdba11dfe74

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