Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e64aec50e9b13a0…

MALICIOUS

PDF

71.7 KB Created: 2021-02-20 15:42:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: e7cd4b43499d7d1186456317f48d13c1 SHA-1: 30afea67846edc49cf79649ba3010d175370c229 SHA-256: 8e64aec50e9b13a03428c3caf6a0760f44b54f06e024b399211a59bbc98481de
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

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://jacksth.ru/wix?keyword=areas+of+regular+polygons+worksheet+11-3+answers PDF link annotation
    • https://cdn.sqhk.co/rozesivotix/jekCjcO/zanufofojedimijinativefeb.pdfIn PDF document text
    • https://cdn.sqhk.co/desogepupema/cchdFD9/37100394176.pdfIn PDF document text
    • https://cdn.sqhk.co/goworonol/qrHWjds/athletic_apparel_industry_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/pojimisuso/ficdFt4/microsoft_word_dictation_not_working_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/vavewiminiv/fyjbuid/police_officer_job_openings_in_ohio.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/yXhdRpJ/chicken_cry_at_night_infant.pdfIn PDF document text
    • https://cdn.sqhk.co/jerivudofin/gchdhiv/wedding_dresses_shop_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/eCidice/download_nom_plant_mod_apk.pdfIn PDF document text
    • http://umdtheatre.ru/microservices_interview_questions_and_answerswnzuc.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/9jgvAIk/zasixokomojarotoro.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/jemazejodep/cheerleading_uniforms_stores_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/vivujoxazawisa.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/purusugixaf.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/cara_video_di_chrome_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/63874072195.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_off0000dcea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEA 5660 bytes
SHA-256: 85a523ee1df6600a661e0a60fa58146b336f2b82d240ddc0820451a531863dfb
font_01_sfnt_off0000f059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF059 9584 bytes
SHA-256: 5900a1ee0329b9083a46d58fe1d8b155369d79dbfc89e96b253240804fa4b43b

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