Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce8af48029dfb287…

MALICIOUS

PDF

73.8 KB Created: 2021-03-22 13:58:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: bc79e6dc2de343598c7eb848cd0e26ff SHA-1: 53b9a10b55d5b47b10ca4e08c5af885286e5d9ad SHA-256: ce8af48029dfb2877735de49e1eb0a199863a635c6aabed729f2dacb6fcaea82
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, identified by the PDF_URI heuristic. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to a 'guide to coaching football', which is likely a pretext to direct the user to the malicious URL for further exploitation or phishing. No scripts were extracted, but the presence of external URIs and high detection scores point to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wix?keyword=idiot%2527s+guide+to+coaching+football PDF link annotation
    • http://towexiwi.sportsontheweb.net/tratamiento_de_candida_albicans_oral.pdfIn PDF document text
    • http://rawitotizoxuk.scienceontheweb.net/xetaja.pdfIn PDF document text
    • http://govuxojikasumot.scienceontheweb.net/75433052252.pdfIn PDF document text
    • http://xamojopilupivo.scienceontheweb.net/antibiotic_classes.pdfIn PDF document text
    • http://jaralet.getenjoyment.net/garmin_vivosmart_3_strap_replacement.pdfIn PDF document text
    • https://nibuwoxemunovox.weebly.com/uploads/1/3/4/7/134714338/vazumo-semelorad-wefufi-senem.pdfIn PDF document text
    • http://mujabelor.mywebcommunity.org/toshiba_dvr620ku_record_vhs_to_dvd.pdfIn PDF document text
    • https://mofivekirupu.weebly.com/uploads/1/3/2/7/132740685/4189118.pdfIn PDF document text
    • https://rojanekawuveruj.weebly.com/uploads/1/3/1/3/131380666/b45ff32107.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/zuxime/junuxedaxidelebafigaj.pdfIn PDF document text
    • http://sitojedakolotil.rf.gd/41652668210.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/bangla_cartoon_motu_patlu_video_3gp.pdfIn PDF document text
    • http://koradanizepagow.myartsonline.com/tecnicas_de_auditoria_informatica.pdfIn PDF document text
    • http://futikuzita.onlinewebshop.net/sobomowutuwa.pdfIn PDF document text
    • http://wejajesenopezoj.onlinewebshop.net/civil_engineering_drawing_handbook.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/should_school_subjects_be_capitalised.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/73874040086.pdfIn PDF document text
    • http://sawozepanoludib.rf.gd/anglo_saxon_poetic_form.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/ninalu.pdfIn PDF document text
    • http://magivekuwili.rf.gd/49527663879.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_off0000e4a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A7 5300 bytes
SHA-256: 57e28d361414a9dcda9ba58549b4bb1a5745e587dccfb6b9970cbc9bfb7f95ac
font_01_sfnt_off0000f6b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B6 10392 bytes
SHA-256: e39ca6abb2e421255e72a3e11489f6c87ccfa8927533a65be20be5a3083de96d

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