Malicious PDF — malware analysis report

Static analysis result for SHA-256 4805de1ed1550976…

MALICIOUS

PDF

108.2 KB Created: 2021-03-15 00:38:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: e58b78989f3a0eb9021912c9335d4856 SHA-1: 87e7c302487061091772951a8cb37690312e21b1 SHA-256: 4805de1ed1550976a6c4dda2b3702dc42a7813fb0b0ebe3cc9e46985d099d3ae
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a technique often used for SEO manipulation and to redirect users to malicious sites. The heuristic PDF_SEO_LINK_FARM specifically indicates a mass of external links, suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious intent, likely to lead users to phishing pages or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 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.
  • 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://soxebez.ru/wix?keyword=pandigital+scanner+manual PDF link annotation
    • http://worldworkbook.com/17931682923lglv9.pdfIn PDF document text
    • https://tivexafo.weebly.com/uploads/1/3/4/3/134348633/ripezogem-desapuxasofome.pdfIn PDF document text
    • https://totidulabi.weebly.com/uploads/1/3/1/6/131606487/d705efb15a79c26.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/lucky_jim_chapter_summary.pdfIn PDF document text
    • http://kunozoxutokusu.mygamesonline.org/ragesugitozupo.pdfIn PDF document text
    • http://vexezujuzas.scienceontheweb.net/16060732942.pdfIn PDF document text
    • http://dadevizevarek.scienceontheweb.net/sonic_menu_near_me.pdfIn PDF document text
    • http://pozijuza.scienceontheweb.net/mitejajizide.pdfIn PDF document text
    • http://mixutadumekaje.mypressonline.com/84686133244.pdfIn PDF document text
    • http://botanilix.mygamesonline.org/nipojoguzumi.pdfIn PDF document text
    • http://persequen.com/pefuminupurajobakufosibmy7k.pdfIn PDF document text
    • https://fuzedefona.weebly.com/uploads/1/3/4/5/134578490/057f5c.pdfIn PDF document text
    • http://ferategaj.scienceontheweb.net/64936719972.pdfIn PDF document text
    • http://prizinsta24.space/26220787463bj29m.pdfIn PDF document text
    • https://leburivirabilaz.weebly.com/uploads/1/3/1/4/131453170/lexifedugomemoro.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/xutomoxu/bill_of_rights_situations_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/davofufomom.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/linajepiwimixin.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/anaesthesia_for_cardioversion.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/xonowozadabuwevu.pdfIn PDF document text
    • http://faleferesevo.onlinewebshop.net/12874000386.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/20133300889.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_off00016ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16AB6 5260 bytes
SHA-256: dfc97b5194e44081dc4ea21f5fd8b853c19c7e5c3d53b1aa2df7347b737725ca
font_01_sfnt_off00017c85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C85 11152 bytes
SHA-256: ab320da687e8ca9399b101edd4c1918975313f26668646a1644c222d152263ef

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