Malicious PDF — malware analysis report

Static analysis result for SHA-256 36e03f082b02bd2d…

MALICIOUS

PDF

91.1 KB Created: 2021-02-26 02:25:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 39fb0ac79e453de1d8c13b784892b97a SHA-1: 85383893722e3475a447e3728923a76763590bc1 SHA-256: 36e03f082b02bd2dd2fe939f9f266dd2ef1559a60ade40b595ea3571bb99b0b4
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, which is likely a phishing lure for software downloads. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest a phishing or social engineering attack.

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://jacksth.ru/strik?utm_term=avaya+one-x+communicator+suite+free+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4407813/normal_5fdf7ee8ba6a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403947/normal_600ebf1fec2cd.pdfIn PDF document text
    • http://italywow.pro/poxevogrowy.pdfIn PDF document text
    • http://kozevoviwepok.iblogger.org/mubojarit.pdfIn PDF document text
    • http://gatorama.space/rigumuneluwuvovep01x7l.pdfIn PDF document text
    • http://rostov-mobile-doctor.ru/39728596284oiy0o.pdfIn PDF document text
    • http://lamaded.mywebcommunity.org/google_cloud_security_certification_free.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/paxivogedewilu/chartered_accountant_course_information.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/medio_ambiente_informacion_en_ingles.pdfIn PDF document text
    • http://nojikigor.myartsonline.com/7366906975.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/searching_movie_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/mezidumiwuwolufuzitavap.pdfIn PDF document text
    • http://vilatelisoto.onlinewebshop.net/firelape.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/96755173851.pdfIn PDF document text
    • http://punozow.epizy.com/how_to_get_unlimited_money_in_gta_5_online_2020.pdfIn PDF document text
    • http://wukevuwotud.rf.gd/popazeruvedagemowel.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/20350051396.pdfIn PDF document text
    • http://todinig.rf.gd/72922334090.pdfIn PDF document text
    • http://nejimafalun.onlinewebshop.net/dell_monitor_u3415wb_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/sujabenajivawopemikobok.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_off00012731.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12731 5508 bytes
SHA-256: 3a40e45705eefc4f87a0fbb291bf8ea33b874dcba01be3017b41625d9406dbd6
font_01_sfnt_off000139fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139FC 10744 bytes
SHA-256: a75769c715b35b04d7f91b1c53b8acb45ff314026eeab2a0b731879811c8d1b1

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