Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad8091a3a1769360…

MALICIOUS

PDF

72.3 KB Created: 2021-03-16 05:21:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: dfeca426b6efe21c519cc504b83c02c7 SHA-1: ab716d70c783c249ad1dd5669ced1828441095a3 SHA-256: ad8091a3a1769360e35c608e6a81008fdabf42dbe06f17480610de7f9aac745b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a phishing site disguised as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of an external URI is a primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/wix?keyword=poisonous+african+snakes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369160/normal_604368fe9fb5b.pdfIn PDF document text
    • http://vimobewawulipiz.mypressonline.com/wuvaxerawarabugefuse.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvukidovime/agey0qT/wells_fargo_business_zelle_fees.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481168/normal_5fe9c77691cf4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454041/normal_5fc88291ddca6.pdfIn PDF document text
    • https://cdn.sqhk.co/kafufojugure/jfPtd8n/bug_s_life_hopper_speech.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/vezumobigodub/kedaxif.pdfIn PDF document text
    • https://s3.amazonaws.com/jigezilor/suguluk.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezux/zulazalinozoxivosuxajuxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/143795c4-be45-46c4-b1a0-12e943cd78b2/do_walmart_cashiers_get_drug_tested_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e721ea01-8c7f-4553-80f5-9d0c367c902c/how_to_reset_tracfone_pin_number.pdfIn PDF document text
    • http://ligoroxenafof.atwebpages.com/xesafesewatejekerulisuk.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/registration_form_in_html_with_css_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0260575c-4391-4275-92b4-fde1f0e6be48/17989785736.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/top_text_to_speech_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e31f808a-08ee-4751-8e7a-ecdb65f65c03/gedap.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/bhakti_sangeet_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/48685830333.pdfIn PDF document text
    • http://sudexixurijaxoz.atwebpages.com/66204570498.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_off0000e080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE080 4908 bytes
SHA-256: 9e38c4a0511e5159498828413380b03f7bad67b4327f9c5dc3cdfcfb67657288
font_01_sfnt_off0000f14b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14B 10136 bytes
SHA-256: 1f101799cd89f50c1c836ccee5a2193d4ab31de57c8ceefcaeb2882a1d8edbb9

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