Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfb84032d89193ab…

MALICIOUS

PDF

76.6 KB Created: 2021-02-21 13:14:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: d5a11317d19eb4fc5d2f70b4e212624e SHA-1: 2b3e4b6c503d84a7112f902c0d38bfe08c3da60f SHA-256: dfb84032d89193ab68c128c0282357223b1aee8ef473e362ec85771d620d6215
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a URL associated with 'Cisco netspace account registration'. This, combined with the ML classifier and ClamAV detection, strongly suggests a phishing attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI indicate a malicious intent to redirect users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=cisco+netspace+account+registration PDF link annotation
    • https://cdn.sqhk.co/zisujidixa/jdfiffE/wonder_woman_halloween_costume_plus_size.pdfIn PDF document text
    • https://cdn.sqhk.co/gubisagebuto/sgfo8gh/disney_princess_mermaid_games_dress_up.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463277/normal_6009fe78211ba.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/eicMfic/walking_dead_world_beyond_review_episode_5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490523/normal_601d4ba2625a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455884/normal_601537af46467.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370525/normal_60196c92bcf0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497697/normal_6022c4a67a6ed.pdfIn PDF document text
    • https://cdn.sqhk.co/lebogomatoze/jbHAjfr/anime_gif_live_wallpaper_2_pro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390095/normal_600456543ddb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476443/normal_5fcb720e844ff.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/Gjjidp3/vitogakofuzo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376374/normal_601ac55cc976e.pdfIn PDF document text
    • https://cdn.sqhk.co/pinofizulag/jf6IIxi/mokixe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471688/normal_6017b64fc60bc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nubimopupugu.rf.gd/62597269699.pdfIn PDF document text
    • http://nunitew.rf.gd/baby_hazel_games_no.pdfIn PDF document text
    • http://magomodatibotu.epizy.com/39557898177.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB58 4972 bytes
SHA-256: 8cfe7b39d0106c61531c2bf9877066c3284081814881666f98d398a7f80eff9c
font_01_sfnt_off0000ec53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC53 10196 bytes
SHA-256: ab47610ff55a41822652045a1202af247f072e99adb00ecba4565bc9ff808e26
font_02_sfnt_off00010f77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F77 16096 bytes
SHA-256: 3a87a2a80cb0740ff7ad33dbd9b35031d90241dfccc5ab96a3d2c3133af9c3ca

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