Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe143413bb5603b1…

MALICIOUS

PDF

73.3 KB Created: 2021-03-14 07:40:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 95232ea2e81ea70b52e37426a163659d SHA-1: 7aabd47a09543e3fd91abe50ce762368481bbd74 SHA-256: fe143413bb5603b1918cfd5270c348f5a57b214d5b1e1fce61d25894ce6c57c5
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to a book guide, suggesting a targeted social engineering approach.

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://jacksth.ru/wix?keyword=their+eyes+were+watching+god+reading+guide+chapter+2+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416791/normal_5ff65dbdabea7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459036/normal_5ff05d112df35.pdfIn PDF document text
    • http://idealica-italiauficiale.website/super_soccer_champs_2019_apk_android_oyun_clubwfdoq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414172/normal_60266f1946a67.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416490/normal_5fe3d8245d700.pdfIn PDF document text
    • https://cdn.sqhk.co/paragapup/jgihhhi/rogers_centre_guided_tours.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485163/normal_60037a7c8bf0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454678/normal_5ff09f8aa1ab6.pdfIn PDF document text
    • http://alluniversity.fun/dubutimexubatuwudukumina0augu.pdfIn PDF document text
    • http://sutivetowit.mypressonline.com/22702886494.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450638/normal_5fe2efda9a181.pdfIn PDF document text
    • http://lnstagramcopyrightservices.org/biopsychosocial_model_of_schizophrenia3tw4r.pdfIn PDF document text
    • https://cdn.sqhk.co/xasexuwosul/42Xggid/wolf_wallpaper_iphone_5s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393754/normal_5ffd7131c0048.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/igghig4/67013235818.pdfIn PDF document text
    • http://gukiduwonaxinef.getenjoyment.net/11780436750.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422382/normal_5fcea42bbd91f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://danebusuji.onlinewebshop.net/71208087394.pdfIn PDF document text
    • http://kifesafijupesob.onlinewebshop.net/full_marks_practical_skills_in_science_class_9_download.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/xixuwugulitusemujawizeze.pdfIn PDF document text
    • http://zorikeroz.onlinewebshop.net/pdf_file_editor_for_windows_10.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_off0000df2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2D 5576 bytes
SHA-256: 203c0db75af26b5fa651b9a3d77726d5430a16ada0bed58470f15c3ae761e92c
font_01_sfnt_off0000f238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF238 10980 bytes
SHA-256: bc7de56356c7e4f7a0780afa1236b96a54482d8f2ceba2f1d73dd99868e669c0

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