Malicious PDF — malware analysis report

Static analysis result for SHA-256 85c6c02d42aefe41…

MALICIOUS

PDF

73.6 KB Created: 2021-03-01 23:29:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e4337af54c5bc7687f79cfa879b592f0 SHA-1: d41217154e69510492c63b46a2e5273245bc00ce SHA-256: 85c6c02d42aefe4183418c7c928d53f264c7c2b96d7e6103978fd3ffecfe50fa
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, which is a common tactic for phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is likely intended to lead the user to a phishing page or a download of a malicious payload.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/wb?keyword=cravings%20chrissy%20teigen%20cookware%20uk In PDF document text
    • https://cdn.sqhk.co/webunojixisa/TYigKbe/finance_management_dictionary.pdfIn PDF document text
    • http://matepiruzozu.iblogger.org/camille_paglia_books.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/KQyPiaL/du_screen_recorder_app_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/temirikuji/hjia8je/sdge_outage_map.pdfIn PDF document text
    • http://tramlaweq.online/flight_itinerary_template_exceldbr9o.pdfIn PDF document text
    • https://cdn.sqhk.co/taxosavasesa/caNjdy5/tazenedifixojinusesib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kudogal.rf.gd/bewars_audio_naa_songs_ing.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/boss_me_25_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/upcoming_b._ed_form_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/85752851164.pdfIn PDF document text
    • http://welididoseburiv.epizy.com/compromise_agreement_letter_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/5507912882.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/shires_brushing_boots_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sudevejerifu/bekhayali_female_version_mp4_song.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/gipozefaji.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_off0000e420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE420 5252 bytes
SHA-256: e41c5cf4546ca441823463541ab239e55f082d4e51022a892203ff4d0ead3b93
font_01_sfnt_off0000f617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF617 10212 bytes
SHA-256: f576979ccd480e78b18d370ad21aeb718a590088f649fbeef88e6a04e7550edc

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