Malicious PDF — malware analysis report

Static analysis result for SHA-256 42f77645b6a4843d…

MALICIOUS

PDF

93.8 KB Created: 2021-02-15 05:46:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 36c3c8d2b1047dea499b3704fcbef06a SHA-1: 27d0736541a82288d5b060b1b5fd6f86e0ecc9a6 SHA-256: 42f77645b6a4843d55535cc726c55020501462a00704dcb9e49217f5f6281e7a
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. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit users by presenting misleading content and directing them to a malicious site.

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://jottigo.ru/wb?keyword=folic%20acid%20pregnancy%20uk%20guidelines PDF link annotation
    • http://glawerry.online/lojepidesalefuduzejbi5js.pdfIn PDF document text
    • http://mastericy-chistoty.ru/tumevikutojipbk.pdfIn PDF document text
    • http://papotupeti.iblogger.org/odia_movie_song_dj.pdfIn PDF document text
    • http://vkysnaya-eda.site/78482439548f12dn.pdfIn PDF document text
    • http://xotizel.iblogger.org/4854993062.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498330/normal_60287937aaf33.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/geraromu/9325451189.pdfIn PDF document text
    • http://sojuwumupipijo.rf.gd/creative_resume_templates_online_free.pdfIn PDF document text
    • http://zudavowopo.epizy.com/74171948597.pdfIn PDF document text
    • http://suxulumogu.rf.gd/72482419890.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/kisemokulipabosotuzoxuv.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/autoclave_function.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/literary_terms_review_crossword_puzzle_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/qualitative_characteristics_of_good_information.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_off000132c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132C6 5364 bytes
SHA-256: 95c8b6400236a9bd20d9803e35889af1ddb93de1affbeb0fcc361bf9822852b0
font_01_sfnt_off00014523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14523 11164 bytes
SHA-256: 4f1f344122fde89720154df64b7ea1866e502bad0af3bd9975af5054d75faa38