Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d35a4c2311629b2…

MALICIOUS

PDF

94.9 KB Created: 2021-03-13 15:44:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: a5d95b690584cb238dafbe6fc7f6d87d SHA-1: 93d926bd6c3b9d2b3ed29959b1dbb44274bb972c SHA-256: 2d35a4c2311629b2490b9bea74606dad239ee5f2062ea37fb2e88992cd47f857
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing. While no scripts were explicitly extracted, the PDF structure and embedded URI strongly suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

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://dugedepap.ru/strik?utm_term=what+is+xp+in+agile+methodology PDF link annotation
    • https://cdn.sqhk.co/goworonol/8jjgwje/no_more_thank_you_meaning.pdfIn PDF document text
    • http://tafasizogir.22web.org/vefolujasuwedi.pdfIn PDF document text
    • https://cdn.sqhk.co/satofurijob/g66gihc/rush_limbaugh_show_today.pdfIn PDF document text
    • https://cdn.sqhk.co/nuduniguwufo/cibthg0/birdy_skinny_love_sheet_music.pdfIn PDF document text
    • http://nigufuf.iblogger.org/78842328893.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubiviv/tjhibjc/tangled_2_movie_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/letaziseb/ij57nhe/best_shooting_games_for_xbox_one_x.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5c6a545-b58c-41d2-b1f5-b95adf81032a/89552540839.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf30d74a-fcfb-4b08-9d65-83f1f380975a/21586303369.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/bowopikoziwonavewobu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fef1b956-81b5-45ad-9c36-5348f8e83519/casio_calculator_hr-100tm_user_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/710b6dbb-3253-49e3-996e-794156fb7243/82508096076.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0937bf9e-df35-4c47-a4a2-d2fc187b7d1c/class_7_english_book_2020.pdfIn PDF document text
    • http://susesibukof.epizy.com/luvotefowivuguxopexuzezi.pdfIn PDF document text
    • http://fujesotes.epizy.com/76521549208.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/winding_walk_clubhouse_rental.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5704a12-45f7-489e-8f8a-871b86a7d3a1/86244457416.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/icai_advanced_itt_exam_questions_and_answers.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_off00013603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13603 5460 bytes
SHA-256: 56f56aa95d45f4e05f71de226ea26a014aea7ab1d940f70f15a902230708a766
font_01_sfnt_off00014887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14887 11220 bytes
SHA-256: d2e4816582cb9663c66217e06eaceee210bcd251457afec58a50c86b33f4f43b

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