Malicious PDF — malware analysis report

Static analysis result for SHA-256 2822b46a33c711d7…

MALICIOUS

PDF

74.8 KB Created: 2021-03-27 11:23:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: ed362ae8aa920e9d4161853e0881bd03 SHA-1: 1b51d12c5d9a6c52211d340f977354eadaa2ffa2 SHA-256: 2822b46a33c711d7ef45b3020809d52a815a160858fe6e043987067f3c08101d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, likely as part of a phishing or social engineering attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into navigating to a malicious site.

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://leonvi.ru/strik?utm_term=how+to+earn+brownie+hiker+badge PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460251/normal_6013b14a2cbf5.pdfIn PDF document text
    • http://worodariravo.22web.org/wanetafulixud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407562/normal_60467094a9c59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405652/normal_605bdc6fdc24f.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/tezude/alien_shooter_2_mods.pdfIn PDF document text
    • http://tudosipede.epizy.com/17495487841.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/8282907573.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87fb6152-2a30-45e3-ad14-9310e989c36c/divafuxopufinowopurasu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4430d52e-193e-4280-af63-e66323f84e65/23564048548.pdfIn PDF document text
    • http://sawutekoxa.epizy.com/silatexi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4107882d-cb76-4303-92c0-1f6a57b689e0/30830817563.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/nadikezubeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c09504ab-4f75-4ab3-a2b3-e33e071b963f/java_swing_timer_example.pdfIn PDF document text
    • http://xomewipasi.rf.gd/libro_de_fsica_savia_secundaria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e28061f2-f367-426d-9a80-426d0d6dc544/the_road_to_el_dorado_20th_anniversary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7050f05-3563-4bd1-a39d-ba3c266d83dc/20590687927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a99db9bc-b96c-4016-88ff-e68d14435e1d/c_coding_interview_questions_for_freshers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a191bde-312c-4e89-9c78-d232e7ecf5f4/333520611.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b962c445-f29e-4e43-9933-93a5548b0960/amar_chitra_katha_stories_to_read_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/42189517756.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_off0000e78f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78F 5136 bytes
SHA-256: aead4032bdae4f17d7bdbf980dca277890d242e9b4dc7e0d9432e606a3ad47cc
font_01_sfnt_off0000f90e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF90E 10872 bytes
SHA-256: f0280a4291399eddba9d0d58ddc69bd9372754721fe19582a24ac4b03a4b4340

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