Malicious PDF — malware analysis report

Static analysis result for SHA-256 7994124c68df4c89…

MALICIOUS

PDF

65.3 KB Created: 2021-02-11 18:59:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 226aba18bb20217511748fb3e35b0e1c SHA-1: a8dae0d10d72318b52d28f780030c4e8ca0d0742 SHA-256: 7994124c68df4c89063410ef933c012ab177b0ec989410e676131d10466a1861
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=what+if+everybody+did+that+pdf PDF link annotation
    • https://bisuxijux.weebly.com/uploads/1/3/5/3/135323954/9695668.pdfIn PDF document text
    • https://lewedizo.weebly.com/uploads/1/3/4/6/134610291/a25562cf.pdfIn PDF document text
    • http://zotagur.22web.org/jugenujumezoxu.pdfIn PDF document text
    • https://suwanofanezelon.weebly.com/uploads/1/3/1/6/131636577/wapirosusexisuketeg.pdfIn PDF document text
    • https://tazipapanora.weebly.com/uploads/1/3/0/7/130776418/6128853.pdfIn PDF document text
    • https://vaxinukosiju.weebly.com/uploads/1/3/4/6/134625250/0e6e710e30.pdfIn PDF document text
    • https://navojinalano.weebly.com/uploads/1/3/4/7/134755450/bujonumewezunopeki.pdfIn PDF document text
    • http://wukosuwusa.iblogger.org/alchemist_leveling_guide_ragnarok_mobile.pdfIn PDF document text
    • https://beperupofifu.weebly.com/uploads/1/3/1/6/131636755/7cb43c.pdfIn PDF document text
    • https://norotenivepele.weebly.com/uploads/1/3/4/0/134042349/tajawikeb-suzovakuxite-robegejetik.pdfIn PDF document text
    • http://kiladuwujufuzav.22web.org/mezubiripitagajuxokeg.pdfIn PDF document text
    • https://gixujadimi.weebly.com/uploads/1/3/4/7/134708567/9901255.pdfIn PDF document text
    • https://dujemezore.weebly.com/uploads/1/3/1/3/131381607/begozimubemev.pdfIn PDF document text
    • https://xumogawas.weebly.com/uploads/1/3/5/3/135341739/fuzogo-tegaj-zelinetisuv-wasipedesepos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gisipevuzugofij.epizy.com/oxford_bookworms_stage_starter.pdfIn PDF document text
    • http://momalovategur.rf.gd/fapirukakilibapimugufew.pdfIn PDF document text
    • http://raseloxezonavo.epizy.com/antivirus_android_gratuito_2019.pdfIn PDF document text
    • http://gonoxil.rf.gd/laxujotetogobesava.pdfIn PDF document text
    • http://kusegipe.epizy.com/aptoide_tv_apkpure.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_off0000c44d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC44D 5232 bytes
SHA-256: 51593a4115c566eb8d1359a99c7abfa127eccdf6b08888fb225f9707f4ea0b0b
font_01_sfnt_off0000d629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD629 9292 bytes
SHA-256: c6a750ff6355d84430459a43e5817e3af1722e50bef843012b7f8fadec747db8

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