Malicious PDF — malware analysis report

Static analysis result for SHA-256 47003411cd4bab73…

MALICIOUS

PDF

73.2 KB Created: 2021-03-16 08:05:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e53e7ef1966ff9e8c3e4fcd91ead7237 SHA-1: 4eb725dbc61fc8017610f589efccfe0b11b46825 SHA-256: 47003411cd4bab73b4a84c7746c9b0d80d01e60603377299bfd8fece9472bfb1
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site, likely disguised as a helpful resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://pelibifir.ru/123?utm_term=codycross+answers+group+312+puzzle+2
    • https://static.s123-cdn-static.com/uploads/4421336/normal_5fe145e11a52a.pdf
    • http://lopozodedawap.22web.org/limopu.pdf
    • https://cdn-cms.f-static.net/uploads/4409827/normal_600fe705a01a2.pdf
    • https://cdn-cms.f-static.net/uploads/4372702/normal_603fbdf8b7e2f.pdf
    • https://static.s123-cdn-static.com/uploads/4492259/normal_5fd07acd3f087.pdf
    • http://kopumiwabetare.66ghz.com/hxh_biscuit_true_form.pdf
    • https://cdn-cms.f-static.net/uploads/4377114/normal_5fd88302085c3.pdf
    • https://static.s123-cdn-static.com/uploads/4425483/normal_5fc82bd5c9c9f.pdf
    • https://cdn-cms.f-static.net/uploads/4480397/normal_5fd7cfe0b89e2.pdf
    • http://pawaridifos.iblogger.org/89150464892.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b88051a3-cf63-49a4-9efa-5d4b518f8700/40809701737.pdf
    • http://pazozewa.rf.gd/dc_shunt_motor_applications.pdf
    • http://riremim.rf.gd/reddy_heater_ignitor_problem.pdf
    • http://vogafaxusa.epizy.com/siwevalugefobixexigerad.pdf
    • https://uploads.strikinglycdn.com/files/fe3e9029-df82-4599-a5e8-bfc4cc562ac5/how_much_do_data_scientist_earn_in_nigeria.pdf
    • http://najabofumason.epizy.com/35490998093.pdf
    • http://fejusudoboriduf.rf.gd/sintomas_de_covid_en_adultos_mayores_con_diabetes.pdf
    • https://uploads.strikinglycdn.com/files/600b0ba1-5bac-4b4d-9693-90cfe72d3ad1/47127636509.pdf
    • https://uploads.strikinglycdn.com/files/52042b1b-6259-4801-8f73-02cb5b003c11/what_does_the_r_in_the_acronym_rice_stand_for.pdf
    • http://muguvap.epizy.com/weekly_performance_review_template.pdf
    • https://uploads.strikinglycdn.com/files/df27514a-a1dd-4939-9ba9-237de280ea20/navy_mental_health_evaluation_instruction.pdf
    • http://wateduwixe.epizy.com/99351825615.pdf
    • http://jenofabejuvokag.epizy.com/television_guide_uk_freeview.pdf
    • http://poburukexefisit.rf.gd/31353114109.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_off0000e095.bin
568c7ba6a00341ef205c3e25e28042a40aa1ba71851ca6fc3cda098ee002042a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE095 5736 bytes
font_01_sfnt_off0000f453.bin
b464325e20bb1e5f494a706bea012ee4addcd00dd579c4de175d5b000d2e666b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF453 10252 bytes

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