Malicious PDF — malware analysis report

Static analysis result for SHA-256 7361489e7d965bad…

MALICIOUS

PDF

79.9 KB Created: 2020-11-24 21:42:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 54e30febb5ee34e892392f77f67ff59c SHA-1: 9ce917eec799b84917713db0c5a77303062e783a SHA-256: 7361489e7d965bad6ad72ffdbac2e70711a35efc0e0230e62cc767cee048596f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9996

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://traffset.ru/strik?utm_term=tragic+flaw+literary+definition PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388824/normal_5fa130202ce10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461761/normal_5fa83ea41c2cc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/873c24ce-49b8-48f3-af74-a7ae6e9d113f/tuwawosorijefigezugotom.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/right_time_of_the_night.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/80124826787.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/ccrt_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/batman_vs_joker_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/rumixa.pdfIn PDF document text
    • https://s3.amazonaws.com/rekibedafowow/redaxopipa.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/play_chess_with_friends_online_android.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_off0000f9c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C8 5152 bytes
SHA-256: d17911cdc3c1ed0c1bf1a33427761017f48cae2052eb4c6f393060de1543236c
font_01_sfnt_off00010b77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B77 12372 bytes
SHA-256: afc529ce223a5dd0f7c2e9e8115259a9784db883d8197e1d5130228729b8a477

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