Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d920032eda05f41…

MALICIOUS

PDF

75.2 KB Created: 2021-02-19 20:20:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d7e2171729922428cad0e2eed3bd7b03 SHA-1: 948c05396a8742dc4b2b95cbd1237e4388085bca SHA-256: 4d920032eda05f417e44c5bc2330582ca7f3f229793e8d41180f48ce2353b76a
104 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious URL, and it was flagged by a machine learning classifier and ClamAV as malicious. The presence of a 'download button' heuristic suggests a social engineering lure to trick the user into clicking the malicious link. No scripts were extracted, but the embedded URI is a primary indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/strik?utm_term=bank+compliance+officer+training PDF link annotation
    • https://cdn.sqhk.co/tononapiwaso/Oeibaia/snake_island_movie_trailer.pdfIn PDF document text
    • https://menajogatidufe.weebly.com/uploads/1/3/0/7/130740573/duzuzolaluwulan_nalaletazofat_tigewufivuz.pdfIn PDF document text
    • http://hh666o.site/watch_alien_19790uxle.pdfIn PDF document text
    • http://kefets.xyz/word_search_eslztc9d.pdfIn PDF document text
    • https://cdn.sqhk.co/gotoruzud/bDCgjOb/one_talk_app_issues.pdfIn PDF document text
    • https://cdn.sqhk.co/tuvasovosew/taBviam/jungle_fever_bingo.pdfIn PDF document text
    • https://kutikeso.weebly.com/uploads/1/3/4/4/134490414/gudibafote-bexujenemekamuw-wimapedu-pobomamavex.pdfIn PDF document text
    • http://item-get.top/mailchimp_template_tips8dc5o.pdfIn PDF document text
    • https://cdn.sqhk.co/pozusonitid/gehfsm5/gamubov.pdfIn PDF document text
    • https://cdn.sqhk.co/sepokafaru/higK7n2/774709724.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/gavobawum/cursive_penmanship_worksheets_for_adults.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/nikugikuxefabunanuf.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/dovodutaxutifadiror.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/54029341285.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/13926402872.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/kagafatarixazosobixuvu.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/56597753677.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE461 5268 bytes
SHA-256: bde8ca432cb7ee369b5996834e87022baeea1e9e8350aabc7500d461a9c34e0a
font_01_sfnt_off0000f63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63D 12308 bytes
SHA-256: 990d1047b5d9c0e1ae2adb5b56a988d6e6c968445836653387f3ae67f3bd5186

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