Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d9c92941beb4844…

MALICIOUS

PDF

84.9 KB Created: 2021-05-01 04:06:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 273b75d7b07ca28e35e9ddc21685923a SHA-1: afe223878da088fa5c08addbb0288f524c4fb09e SHA-256: 9d9c92941beb48447d893f3acbed272bc71311e35712d07cda39973f7b00c4a9
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into navigating 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://soxebez.ru/strik?utm_term=what+time+does+nyse+close+christmas+eve PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405945/normal_6029b09c6287f.pdfIn PDF document text
    • https://jerewerek.weebly.com/uploads/1/3/5/3/135349205/8618807.pdfIn PDF document text
    • http://kifopelidito.mypressonline.com/technical_analysis_explained_free.pdfIn PDF document text
    • http://stavki-na-sport.site/57755445042un8zd.pdfIn PDF document text
    • http://extraevents.ru/melhor_dieta_para_perder_barriga_rapidovf0zg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489846/normal_5ff61602df18b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413707/normal_6052a4a0bf108.pdfIn PDF document text
    • https://ripodomix.weebly.com/uploads/1/3/0/7/130775876/sazure_veduliw_xedifoga_safawosivul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485442/normal_6003a8efda1ea.pdfIn PDF document text
    • http://trysucre.pro/bunapozou9ygm.pdfIn PDF document text
    • https://lowunidedalovel.weebly.com/uploads/1/3/1/3/131380213/2337426.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://dba0ca6b-c979-46b3-87c9-041648dee063.filesusr.com/ugd/6f58fb_dbc111161d934a46916cdd85f3b34fbe.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sorogamat/kisafip.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/jio_video_chat_app.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/certificate_of_proficiency_in_english_2.pdfIn PDF document text
    • http://zivonupawidam.atwebpages.com/61900392749.pdfIn PDF document text
    • https://d872ce2a-2baf-4032-ab86-ab75b2f66d52.filesusr.com/ugd/338562_66a9e18ad44d45ecb57b119a51943b3a.pdf?index=trueIn PDF document text
    • http://duvodix.myartsonline.com/how_to_work_out_the_margin_of_safety.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/how_to_fix_emergency_brake_on_john_deere_gator.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_off00010ca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA1 5356 bytes
SHA-256: a14bf201591785a76fb155666ca9d234f1e800023a55fb845a19d9b0fd2238f2
font_01_sfnt_off00011ebe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EBE 11640 bytes
SHA-256: 8a5402ff8599851771d67b77a7a31a96d073c0d80d90c6435f4c79abe79a3773

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