Malicious PDF — malware analysis report

Static analysis result for SHA-256 8442d4b20cd90c69…

MALICIOUS

PDF

80.4 KB Created: 2021-03-02 15:41:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e0ff690b337b21724c013800528a9858 SHA-1: 9420537667e0b582e1a7bb2085f945e55c749804 SHA-256: 8442d4b20cd90c692522e0102134d4c3b8b463335607cdcad5d108f19fbd6e08
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/wix?keyword=selmer+bundy+ii+alto+sax+serial+number PDF link annotation
    • http://bomaduworofa.medianewsonline.com/how_to_use_scarce_resources.pdfIn PDF document text
    • http://sagunutu.medianewsonline.com/69777797420.pdfIn PDF document text
    • http://dajexori.mypressonline.com/what_is_the_history_of_the_sweet_potatoes.pdfIn PDF document text
    • http://gonugotez.22web.org/fitted_sheet_set_full.pdfIn PDF document text
    • http://fajasated.mywebcommunity.org/73179577539.pdfIn PDF document text
    • http://taxokijoba.sportsontheweb.net/how_many_years_does_it_take_to_become_a_veterinary_technician.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kuparego.rf.gd/fodobiwekolunokinofarep.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/wordpress_user_registration_email_verification_without_plugin.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/bu_bhopal_exam_form_b._com.pdfIn PDF document text
    • http://fopagozijudiri.epizy.com/laminating_sheets_near_me.pdfIn PDF document text
    • http://bituwevemexeku.rf.gd/jotamofetuwuvojivuza.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/soxuzoxukagulaw.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/driver_avision_ad125.pdfIn PDF document text
    • http://gidimuni.epizy.com/how_to_fix_turtle_beach_headset_stealth_700.pdfIn PDF document text
    • http://gukupexokopiwug.epizy.com/zusaw.pdfIn PDF document text
    • http://likutolejit.onlinewebshop.net/2008_dodge_avenger_sxt_transmission_problems.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_off0000fc3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3A 5384 bytes
SHA-256: 16ef9418b6a63163ab6ae31c8e07584271e7332371b9e1dc4f3147943a017e30
font_01_sfnt_off00010e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E73 10968 bytes
SHA-256: eb4e9ad9b963c75a7ba413f915e2ff051d40f755290abbed578b2bef693792dd

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