Malicious PDF — malware analysis report

Static analysis result for SHA-256 e30e33afe4c76eac…

MALICIOUS

PDF

72.9 KB Created: 2021-01-12 06:05:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: b7262b29c3a2859eed05f642aa2646ac SHA-1: 28c011576c853921dede1b7157c6aa511c7b4aec SHA-256: e30e33afe4c76eac29d8f11a5a284b8f3a3e7f1db17bee31fa454b01861d0ab8
154 Risk Score

Malware Insights

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

This PDF file contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier and ClamAV also flagged this file as malicious. The embedded content, though partially corrupted, suggests a lure related to 'Dante's Inferno'. No scripts were extracted, but the presence of a malicious redirector indicates an attempt to lead the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://traffine.ru/123?utm_term=dante%2527s+inferno+canto+1+modern+english In PDF document text
    • https://cdn.sqhk.co/joxesinejag/1wOWwgi/55474323545.pdfIn PDF document text
    • https://site-1176160.mozfiles.com/files/1176160/2478579406.pdfIn PDF document text
    • https://site-1176767.mozfiles.com/files/1176767/63666397304.pdfIn PDF document text
    • https://site-1175227.mozfiles.com/files/1175227/best_breakup_books.pdfIn PDF document text
    • https://site-1166659.mozfiles.com/files/1166659/gedolofuzawafinojikud.pdfIn PDF document text
    • https://site-1168081.mozfiles.com/files/1168081/9660557664.pdfIn PDF document text
    • https://cdn.sqhk.co/majumoros/jdFhdih/mozifelolidaromaxasenurim.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/xuzakob/vocabulary_list_for_ielts_writing.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/diwaka.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/newavikadupawufuzadatoze.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/broadsheet_sydney_sunday_lunch.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/walking_dead_road_to_survival_armory_stun.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/google_trademark_lookup.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/industrial_wastewater_treatment_technology_patterson.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_off0000e0f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F6 5520 bytes
SHA-256: a701c9cfb69eb04a412b77a2711e206baa0498d68d6ef927e736dea2be968cb5
font_01_sfnt_off0000f39c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF39C 10204 bytes
SHA-256: a74a6cc0a7fb9b9ebba1fe4789ed485c900b969316171f4f083abb714b937d44

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