Malicious PDF — malware analysis report

Static analysis result for SHA-256 8705c5db01d3894b…

MALICIOUS

PDF

88.1 KB Created: 2021-03-24 17:15:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: fab74781d6924e84636d0fdd616a3e3e SHA-1: b604c4967067a804655969ca670ee8364dca6d69 SHA-256: 8705c5db01d3894ba9420b939fdbe9e7cd4210f285d7ba97e7f3d1bda098e6ce
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, suggesting it is used to distribute malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the presence of an external URI and the nature of the PDF suggest it is part of a phishing or malware distribution campaign, likely attempting to trick users into downloading a payload disguised as a legitimate setup file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/123?utm_term=classic+shell+setup PDF link annotation
    • http://nunokulivot.22web.org/68959846710.pdfIn PDF document text
    • http://vujadijijevi.iblogger.org/regression_analysis_journal_article.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/hhjcJij/videfatizufexisodajozej.pdfIn PDF document text
    • http://reveruverof.medianewsonline.com/mythology_quiz.pdfIn PDF document text
    • https://cdn.sqhk.co/reriwoduriju/WzlNjfE/kings_punch_recipe_chuy_s.pdfIn PDF document text
    • https://fetezubusob.weebly.com/uploads/1/3/2/6/132681625/bifiwedipudose-namexug.pdfIn PDF document text
    • http://waverufusufafuv.scienceontheweb.net/nezenujulaf.pdfIn PDF document text
    • http://dexowowijovovu.iblogger.org/xazisejobapimenunegur.pdfIn PDF document text
    • https://bipejazikapidim.weebly.com/uploads/1/3/4/5/134529651/3442050.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/rojalexipokadaz/some_social_issues_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/12400071389.pdfIn PDF document text
    • http://kuwexugebukutim.rf.gd/20621881592.pdfIn PDF document text
    • http://tapoloferazuziw.atwebpages.com/sojorumof.pdfIn PDF document text
    • http://rerumixididepu.rf.gd/3686194300.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/darkest_days_book_review.pdfIn PDF document text
    • http://xuxalonitu.onlinewebshop.net/animal_adaptations_worksheets_4th_grade.pdfIn PDF document text
    • http://zotomogizolelaz.rf.gd/bteb_result_2019_with_marksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/11761832424.pdfIn PDF document text
    • http://litujomotoju.epizy.com/libro_una_mujer_que_ora_por_su_esposo.pdfIn PDF document text
    • http://guxajez.rf.gd/guia_holman_de_apologetica_cristiana.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_off000119ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119EE 4828 bytes
SHA-256: 14ab4a2f1d5e0ba6934546cb6166ffc093854f6055039112b9ce642c882eb639
font_01_sfnt_off00012a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A54 11568 bytes
SHA-256: a348a7fb827b5ce7b505b34bec69e1dc929916cd9f68a6ac801b8cf9cddbbf9b

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