Malicious PDF — malware analysis report

Static analysis result for SHA-256 40554076f6ab9393…

MALICIOUS

PDF

72.5 KB Created: 2021-03-15 21:44:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 8e0b257cea33cc395d9e40e827a53523 SHA-1: 8b802f68942d256bedba5ed95735e656831806e8 SHA-256: 40554076f6ab9393265d31a08ffe4259e585df5b5f3e964750880470d979df20
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to 'maypoin.ru', which is a strong indicator of a phishing or malware distribution attempt. The PDF structure and embedded artifacts suggest it's designed to exploit vulnerabilities or trick users into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/wix?keyword=media+politics+a+citizen%2527s+guide+4th+edition PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405922/normal_60490d66745a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460982/normal_60067fa0eece3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467560/normal_5ff361919dfe6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417139/normal_6043cd0d17a3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496391/normal_6002376b36a03.pdfIn PDF document text
    • http://nebatomefov.scienceontheweb.net/pdf_ke_word_online_gratis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422909/normal_600a1efce7bc8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476135/normal_6005139381373.pdfIn PDF document text
    • http://zilitimo.getenjoyment.net/17287225868.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/40e8eab2-77ec-4ac1-8b72-d5370e142bc9/how_to_install_garmin_echomap_93sv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec23199a-38bd-4c71-88b8-b3e5a2e404d3/brandy_melville_locations_los_angeles.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/chinese_cinderella_book_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/97216050353.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/beaver_creek_weather_report.pdfIn PDF document text
    • http://dupepoge.onlinewebshop.net/arduino_bluetooth_android_example_code.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/vatifokobimowodafopew.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/cbet_full_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb726086-e694-499f-8080-75e4d7b71fbd/difference_between_food_web_and_food_chain.pdfIn PDF document text
    • http://zuputes.atwebpages.com/4883835008.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/98057367856.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78e50471-34c1-45f3-b537-70bc06785277/romeo_and_juliet_1996_balcony_scene_analysis.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_off0000daf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF1 5416 bytes
SHA-256: 9dbdae05646f89e5961bc8d14335bbfd28349ee1af826f47cb0dd382a7bea2ce
font_01_sfnt_off0000ed7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7D 11444 bytes
SHA-256: 6df248ee102195f9ece16983186e7aabf5bd0a4de13bdc686f2de30a670f8648

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