Malicious PDF — malware analysis report

Static analysis result for SHA-256 9defae552d811a6f…

MALICIOUS

PDF

70.5 KB Created: 2021-02-22 21:31:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 6129b0c56e266d7586cc5098c7797069 SHA-1: 0264390a4b9d82f04e6d448ce3a9a5fda04bdfa4 SHA-256: 9defae552d811a6fc1db11fed3cf95c5b6936d8ade08d42e1a7f625e9b2fbf53
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL leading to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body's content, combined with the external URI, suggests a lure to a malicious site disguised as relevant information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/strik?utm_term=jandy+caretaker+5+port+valve+rebuild+kit PDF link annotation
    • https://cdn.sqhk.co/vefoveted/hdicqhW/man_down_tv_show_watch_online.pdfIn PDF document text
    • http://kegujusotuk.iblogger.org/bedoro.pdfIn PDF document text
    • https://somirurawepaf.weebly.com/uploads/1/3/1/3/131381963/xobesulozuposavi.pdfIn PDF document text
    • https://leximefowa.weebly.com/uploads/1/3/2/6/132680903/8801521.pdfIn PDF document text
    • https://cdn.sqhk.co/dezorevukor/Tjegege/zajitujutozili.pdfIn PDF document text
    • http://dogosufomume.iblogger.org/forinujakijowatug.pdfIn PDF document text
    • https://teleroxekafi.weebly.com/uploads/1/3/5/3/135321942/9430308.pdfIn PDF document text
    • http://kewovega.22web.org/gadosix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://guvodakar.epizy.com/99478969329.pdfIn PDF document text
    • http://sobibuxasegisun.rf.gd/70701936149.pdfIn PDF document text
    • http://mefirakuk.epizy.com/sexekomarol.pdfIn PDF document text
    • http://bojefej.epizy.com/wood_laminate_sheets_lowes.pdfIn PDF document text
    • http://wepesubotivirel.epizy.com/6686885685.pdfIn PDF document text
    • http://gomitobovuni.rf.gd/roziranigubagegegakek.pdfIn PDF document text
    • http://vujipuxi.epizy.com/florida_used_car_bill_of_sale_form.pdfIn PDF document text
    • http://kutijizon.epizy.com/canakinumab_prescribing_information.pdfIn PDF document text
    • http://mujunuge.rf.gd/weather_report_for_aliquippa_pa.pdfIn PDF document text
    • http://pixuxurarosu.epizy.com/2610593905.pdfIn PDF document text
    • http://fewetero.epizy.com/simple_vehicle_bill_of_sale_template.pdfIn PDF document text
    • http://lonivone.rf.gd/rijirakexomubi.pdfIn PDF document text
    • http://rimamosapike.epizy.com/asquith_primary_school_mansfield_ofsted_report.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA5C 5252 bytes
SHA-256: aec03aa3d468f008cd455f2f132f3e7ca2ce5d1e87b3bb8faef6c680b379189e
font_01_sfnt_off0000dc44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC44 9900 bytes
SHA-256: 9baafb97191b5baec1e0fb69a69a6bf41b2beebd246e82cae96b698bbf9f210d
font_02_sfnt_off0000fe12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE12 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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