Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67e46b0f4ba7c79…

MALICIOUS

PDF

73.4 KB Created: 2021-01-26 07:52:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9c3e75c03463289f13d900c4d9f5cc7e SHA-1: 623b15b1fec4e602c87e5ff5f2b0bd37b9792576 SHA-256: e67e46b0f4ba7c79d5fe48fc70c4875e5378c537fe02d5eb7bf09fc3e1647c74
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URL that leads to a phishing site, disguised as information about a 1935 silver certificate. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious website, likely for credential harvesting or malware delivery.

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://maypoin.ru/123?utm_term=1935+silver+certificate+1+dollar+bill+value PDF link annotation
    • https://xetasigebe.weebly.com/uploads/1/3/4/4/134443645/tiwexuvokitiraw_walajeli_jigudutabizumuk_lebagawevasakib.pdfIn PDF document text
    • http://alisaborodaenko.design/the_lost_vikings_iiikvlc9.pdfIn PDF document text
    • http://rodsfish.club/old_time_country_gospel_music_videos8dv1r.pdfIn PDF document text
    • https://nasavizar.weebly.com/uploads/1/3/5/3/135322571/vofebigekabineboz.pdfIn PDF document text
    • https://dunifavopugi.weebly.com/uploads/1/3/5/3/135312205/3612626.pdfIn PDF document text
    • http://situbune.iblogger.org/formative_assessments_for_special_education_students.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/cn0bhKN/state_bank_ez-_pay_card_application_form.pdfIn PDF document text
    • http://bedusopuzal.22web.org/halloween_bingo_template.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/pBgSgf0/supadebawobaxaboj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381976/normal_5ffbddd870301.pdfIn PDF document text
    • https://cdn.sqhk.co/lukapokobejo/CWicGge/64321314508.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/tirimofufemukat/adaway_apk_non_root.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/48159112932.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/65871173351.pdfIn PDF document text
    • http://piwuzodoxomox.epizy.com/wetunetupepuwopuzakubex.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/cbse_class_10_online_marksheet.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_off0000e087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE087 5616 bytes
SHA-256: 2f8fd9eeac1ca7781a8aed403309e41199aaf176440678aa52b5322acb36af38
font_01_sfnt_off0000f3b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B8 10840 bytes
SHA-256: f9b178be63b3c4c13831968feb8c65296d07ae4a3578d25b12c95d1b0166262e

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