Malicious PDF — malware analysis report

Static analysis result for SHA-256 56de717ce5d0ff69…

MALICIOUS

PDF

62.0 KB Created: 2020-11-12 22:48:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 345891605443c9fbdbb6fa9150b76d02 SHA-1: 203a988c8d636096e3c4fa13922241476e002932 SHA-256: 56de717ce5d0ff690fdf12d866151c670595e3050b74e0ff4a4cddd71c750b31
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 0.9995

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/123?utm_term=casio+calculator+manual+fx-82ms PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481402/normal_5fa7127991f4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370309/normal_5f9e7a9f1fe5c.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/pomaxa/the_courageous_follower.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/accounting_practice_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/le_rapprochement_bancaire_en_comptabilit.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/bipenadopuxiripaja.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/guitar_grimoire_chords_and_voicings.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/what_is_a_fable.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/xapeladabuxaz.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/breaking_news_today.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://world.casio.com/edu/fx-82MSfx-83MSfx-85MSfx-270MSfx-300MSfx-350MSUserIn 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_off0000ae93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE93 5360 bytes
SHA-256: a9b923da7868e9cd7fb8977c3685138fead6f427622bddd2885ffe8c1627e1a5
font_01_sfnt_off0000c0bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0BF 12984 bytes
SHA-256: 1c49a36f66cc26de33c51fc502c7d6131b28ffa6e434efe2d03ac3d0347cb94f

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