Malicious PDF — malware analysis report

Static analysis result for SHA-256 400dd14c7bd5ce63…

MALICIOUS

PDF

77.6 KB Created: 2021-05-14 02:40:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8296a76f148924f23a7bd7b9f71a35d6 SHA-1: 9db4905ba8c976837cdbcd02326f5fd561be83ba SHA-256: 400dd14c7bd5ce63892c0f50ccf536c4de30537ffbacd678bc28a3ad61b195a6
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 malicious domain, likely intended to deliver a phishing lure or malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the PDF structure and embedded URI heuristic point to a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://resalured.ru/strik?utm_term=can+kerosene+heater+fumes+be+harmful
    • http://bewerab.22web.org/85490773775.pdf
    • https://cdn.sqhk.co/zumufapofow/8N2gg8e/personal_leave_of_absence_form_template.pdf
    • http://wifudimitalon.22web.org/6294617555.pdf
    • https://cdn.sqhk.co/guwewaxa/YeGvcbx/amazing_world_of_gumball_characters_cloud.pdf
    • http://purepivuposav.iblogger.org/minority_scholarship_form_2020_19.pdf
    • https://cdn.sqhk.co/jovuvufoxet/7Nsjf9u/28185470730.pdf
    • http://wameduxuka.iblogger.org/zibirur.pdf
    • https://cdn.sqhk.co/sarunasol/hdni4XS/naxibumejidugazaro.pdf
    • http://bixuvukulizolu.22web.org/agriculture_in_africa.pdf
    • http://lodixewovufosa.iblogger.org/greedfall_romance_answers.pdf
    • http://sexewemomupepu.22web.org/45859582950.pdf
    • https://cdn.sqhk.co/munoforifuso/fghyidV/tiktok_app_apk_lite.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zujopafupo.epizy.com/rojudesizikuxofasogeloxez.pdf
    • http://fofuxolisemaxim.epizy.com/spelling_words_for_2nd_grade.pdf
    • https://uploads.strikinglycdn.com/files/805c2d14-d753-4ba3-afcd-e13a63563054/wigisufit.pdf
    • http://mebebopolimo.rf.gd/satyanarayana_biochemistry_latest_edition_free_download.pdf
    • https://uploads.strikinglycdn.com/files/22440c11-954f-46ea-bdb7-a615dbbdb677/4189539189.pdf
    • http://xetumerim.rf.gd/chemistry_calorimetry_problems_2_worksheet_answers.pdf
    • http://sapumazolexu.epizy.com/zoberogunanotodumi.pdf
    • https://uploads.strikinglycdn.com/files/15ead8ac-fe6c-4a11-84f5-e2e301693323/james_allen_jewelry_address.pdf
    • http://sorufemizifolug.rf.gd/gojedizedafed.pdf
    • http://getitusedoniriv.epizy.com/after_we_collided_book_2.pdf
    • https://uploads.strikinglycdn.com/files/d0bfc028-beb2-4482-b7c5-96a9100a464c/48650993832.pdf
    • https://uploads.strikinglycdn.com/files/3bce3a12-e92e-4ae6-9859-2b50bb7eb410/vezukitujo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f33f.bin
754347db7bd5f2bb7b79262c5b63d5aac6440a197ea24e4c4069d5c0f8e65611		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF33F 5116 bytes
font_01_sfnt_off0001047a.bin
fe550da3e8062da71ccf2934eb0f778105f5f349ed28b6522374b575b682d0c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1047A 10472 bytes

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