Malicious PDF — malware analysis report

Static analysis result for SHA-256 c791510c93320cb8…

MALICIOUS

PDF

74.9 KB Created: 2021-02-21 10:13:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: dae6a936a836c7e64ab276e695edb433 SHA-1: 0cf2c48c1875d5f9d7dfcf9eab9435d76bf5b637 SHA-256: c791510c93320cb83e2159ba7159e31804b95bc21a1adad60b5d16ec888a38e1
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://bologen.ru/strik?utm_term=how+to+study+organic+chemistry+for+neet+quora PDF link annotation
    • http://shopsupergood.site/91527704594142ak.pdfIn PDF document text
    • http://vk-settings-change.online/emulator_games_for_android_pokemonluras.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426270/normal_60310052c8d72.pdfIn PDF document text
    • http://gulenapirexapo.iblogger.org/xatak.pdfIn PDF document text
    • http://itfamily.info/astm_standards_for_tensile_testing_of_polymer_composites7zxkv.pdfIn PDF document text
    • http://fruitik.space/harsh_mohan_textbook_of_pathology_8th_editionp6gbl.pdfIn PDF document text
    • http://nalomojup.22web.org/gangland_season_3_episode_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476952/normal_6025ad04cd7cb.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/gizonukorad/fimuko.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/burp_suite_professional_2._0.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/cortina_d_ampezzo_ski_snow_report.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/free_chord_sheets_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/remoxolesi.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/massachusetts_answer_to_complaint_form.pdfIn PDF document text
    • http://joluvolob.epizy.com/32045470447.pdfIn PDF document text
    • http://xesepodine.rf.gd/gosaw.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/43692337786.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_off0000e6c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C3 5684 bytes
SHA-256: 23d740dd97e8aa83ac1729b46709838c2380a286112cfbe81fd1023113210ce4
font_01_sfnt_off0000f9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9FB 10764 bytes
SHA-256: 5608c80ee8a015b0a61f7df1aa04c347ecf252d233c93cde21fd084796e3a42d