Malicious PDF — malware analysis report

Static analysis result for SHA-256 76077231910b723f…

MALICIOUS

PDF

73.5 KB Created: 2021-02-14 20:38:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6db3e9688dcbb0437b162113d679d078 SHA-1: 300b05045aa3b3f01b0f378741cdeaae339c77f1 SHA-256: 76077231910b723f60625a92ca9b57ea24649f9b4f451716df5a43618f3f32f0
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=offshore+drilling+pros+and+cons PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409244/normal_600ff16646d66.pdfIn PDF document text
    • http://yandex-delivery.cc/jakazedizeborem9bf.pdfIn PDF document text
    • https://notefusiwedamap.weebly.com/uploads/1/3/4/8/134872173/3852638.pdfIn PDF document text
    • https://koralazuvumo.weebly.com/uploads/1/3/1/8/131871516/zirukudotiwis.pdfIn PDF document text
    • https://nerupeke.weebly.com/uploads/1/3/1/4/131483009/kulevalax.pdfIn PDF document text
    • https://dasowafajego.weebly.com/uploads/1/3/4/7/134723411/bokawema.pdfIn PDF document text
    • https://janirakuvofubej.weebly.com/uploads/1/3/4/7/134734148/2558787.pdfIn PDF document text
    • https://nobaloledajasom.weebly.com/uploads/1/3/2/6/132681012/runafumasosasoperof.pdfIn PDF document text
    • https://xakebugus.weebly.com/uploads/1/3/4/0/134018628/varapowoto.pdfIn PDF document text
    • https://xumotisububilup.weebly.com/uploads/1/3/4/5/134591263/332e12.pdfIn PDF document text
    • https://votadewigul.weebly.com/uploads/1/3/0/7/130775387/pugexojixogoxifob.pdfIn PDF document text
    • https://bamewubi.weebly.com/uploads/1/3/2/3/132303354/8896573.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413117/normal_5fdea0f889c6e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wedopuketid.rf.gd/34240069990.pdfIn PDF document text
    • http://wuparol.epizy.com/livros_de_botanica_gratis.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_off0000e4a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A1 5444 bytes
SHA-256: fef0fbabe54f9cc106fb5bacf6dd770c7e0f3f877888d4ac554ed1f099182b23
font_01_sfnt_off0000f721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF721 9992 bytes
SHA-256: c71a01c5649b49298ef0622ee38e2b0d40cb1d9b2ddefc2a5a230b02ee4501ec