Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f5f829c8cb76187…

MALICIOUS

PDF

77.6 KB Created: 2021-02-18 14:30:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: a917c7d883ce75a66aba2fa64302d46c SHA-1: 20132c09751deea61f6a70d3af2790a775d21f54 SHA-256: 5f5f829c8cb76187ca73f4dcb9b21f3a28ded7068dd90d7c01d482e86377769e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, likely intended to phish users. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect users to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=amazon+rainforest+anaconda+snake+facts PDF link annotation
    • http://mjawebdesign.net/75988806363sne7t.pdfIn PDF document text
    • https://cdn.sqhk.co/vutenugade/iduIyOJ/colorblind_counting_crows_chords.pdfIn PDF document text
    • https://cdn.sqhk.co/posojuvapono/jKgeieA/disney_plus_subscription_support_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/vexedobasof/Fjhvhj9/snowfall_forecast_michigan.pdfIn PDF document text
    • http://basiditdcf.space/crush_them_all_best_staging_team5r7j1.pdfIn PDF document text
    • https://cdn.sqhk.co/riragimi/jigjitO/java_stack_stack_overflow.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/gcj6ib4/outfoxed_game_amazon.pdfIn PDF document text
    • https://cdn.sqhk.co/duponetix/iZ05orP/7_wonders_of_the_ancient_world.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/jfsgcij/solel.pdfIn PDF document text
    • https://cdn.sqhk.co/lefidotoxono/yFSighf/smart_care_hand_sanitizer_recall.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuxopova/0AN5gig/zojujumunul.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/jhgh93f/83313259505.pdfIn PDF document text
    • https://cdn.sqhk.co/jinuzekovodi/Shcifjd/58977198214.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/cAhb6Vf/tiny_township_farmers_market.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/poguvelefa/88952112505.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/html_template_bootstrap_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/alien_shooter_2_game_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/mcgraw_hill_education_precalculus_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/18405558792.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/nowap.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CF 5024 bytes
SHA-256: fb30f9caa87d955420db82b92c6058927818f2b437e048617b035405fe4f33ab
font_01_sfnt_off0000f8cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8CB 9908 bytes
SHA-256: e1c9a04850bf5151efdc5802a8f3f98073b00ee2aaedde957752a489a8a07500
font_02_sfnt_off00011aba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ABA 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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