Malicious PDF — malware analysis report

Static analysis result for SHA-256 401e212a3cca3fc3…

MALICIOUS

PDF

72.0 KB Created: 2021-03-01 12:53:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3607420f2f9becf3b0ac71da8f3fddc6 SHA-1: 79080c5de2d66a169c11a70b17adc281fbe6adc5 SHA-256: 401e212a3cca3fc3041bd304d469d0f6fbcdb0bb73d1966efb4fa8c33cede981
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as Pdf.Phishing.Trojan. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs indicate it's designed to redirect the user to a malicious site.

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://mezovuduw.ru/award?keyword=5+ingredient+college+cookbook+pdf PDF link annotation
    • https://cdn.sqhk.co/tiwopaperuv/QhfhaQd/83262578104.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365570/normal_5fee6f50e738b.pdfIn PDF document text
    • http://lowabunuzoxa.getenjoyment.net/jupataf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448746/normal_602ca3bfddfe3.pdfIn PDF document text
    • http://dizititakozazi.mywebcommunity.org/andromeda_strain_movie_2008_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459321/normal_5fceb6b2b558a.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/mokixetat/68484017643.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/2503357269.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/24484535957.pdfIn PDF document text
    • http://gapoxuvopa.onlinewebshop.net/83373237062.pdfIn PDF document text
    • http://luvabokinoleg.onlinewebshop.net/can_i_plug_my_headphones_into_my_xbox_one_controller.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/how_to_connect_hp_officejet_5255_printer_to_wifi.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/29049966203.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/chakram_ringtones_free.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_off0000ddd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD6 5168 bytes
SHA-256: eefacd8cafdaae31300dc5644c1e762a72bd9b308dd51b5606bae1a33d03e744
font_01_sfnt_off0000ef81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF81 10324 bytes
SHA-256: f5dff37929792738acb4d2f77a2786fdd1ca67cae246aa54fecbcc5afca1b257

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