Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea014f79e421d1d5…

MALICIOUS

PDF

84.1 KB Created: 2021-03-23 10:42:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e552e682bb27e4a505b62ab0e32f88c SHA-1: 9c2181ec0d7486df3fe2ff5f415e01803eb1d00a SHA-256: ea014f79e421d1d5e1b50cdbdb4635ffe89663b256218dd5539a62c41deb4849
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to 'half life' equations, which is likely a pretext to encourage clicks on the embedded malicious URL.

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://kuzutuzo.ru/strik?utm_term=how+to+write+an+equation+for+half+life
    • http://rowefuzoj.mygamesonline.org/rulunaxezejozape.pdf
    • http://salizurewaki.mypressonline.com/43848029179.pdf
    • http://roxedizusugu.mywebcommunity.org/landscape_architecture.pdf
    • http://fibutogu.mywebcommunity.org/14953099942.pdf
    • https://cdn.sqhk.co/kakolutezegu/hjeihgh/zondervan_kjv_study_bible.pdf
    • http://jotusimemirido.sportsontheweb.net/86579112199.pdf
    • http://lebizifijafaxim.medianewsonline.com/malayalam_bible_commentary_free.pdf
    • https://cdn.sqhk.co/jujirepak/jYhdhhb/strike_fighters_pro_free_download.pdf
    • http://bukipumil.mypressonline.com/printable_general_affidavit_form.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/muxegeza/ridgid_planer_r4331_vs_dewalt_dw734.pdf
    • https://6cda4dd4-8aac-43e7-8003-7c0eea9f7907.filesusr.com/ugd/34e26e_59fd8ac7ebc14ca48bebe16551cb9391.pdf?index=true
    • https://s3.amazonaws.com/wofaxil/lasagne_sheets_online_india.pdf
    • http://wipadafefuxasi.onlinewebshop.net/difference_between_equity_and_equality_in_education.pdf
    • https://acfc0e76-311d-46af-9c13-f46c112eb424.filesusr.com/ugd/f90bad_4151a05f881f42028f6e4d99e8ef1ff7.pdf?index=true
    • http://litorow.myartsonline.com/66282614562.pdf
    • https://409b2d23-5c1d-402e-97df-26c0da9299b0.filesusr.com/ugd/2e3d42_a3d30fcb5dad4eb2bb6f20d1e191f1dc.pdf?index=true
    • https://5be7aec3-7d66-433b-ae1d-2bfb807ddf2a.filesusr.com/ugd/24deb6_6996c3997c2346a59086f8d96c3a467c.pdf?index=true
    • https://db6d201d-bdff-4648-9982-d9cfaac7639e.filesusr.com/ugd/98857b_7c62b1a59dfb43b0830bdcad3a64e9bb.pdf?index=true
    • https://0e733887-fd72-4d21-8b10-0a39cafbc931.filesusr.com/ugd/1e4d10_3dcf883ed11743de8af06a8a5da9e01b.pdf?index=true
    • https://92fed17e-af34-466b-b3fe-38cd9ef27699.filesusr.com/ugd/192d58_1a00e682c2424f5f8741e88ac10b9f7e.pdf?index=true
    • https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_e0d6d95c30804805928cb3a0c4afbc59.pdf?index=true
    • https://8d5bcf17-53f2-4f21-b585-7a27aef14131.filesusr.com/ugd/7baf93_3f9927d8411946db81a0c370de7394eb.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f729.bin
befc9e02d462f8cbe7503f2a8d2dbbdf4f1b13bca62ea3ccd4f4a090d8d471e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF729 4856 bytes
font_01_sfnt_off000107bc.bin
53847450e0e37620f2e39d622fdc151b8dd1d393715b6e97edd54abae22ae167		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107BC 10968 bytes
font_02_sfnt_off00012d75.bin
3a87a2a80cb0740ff7ad33dbd9b35031d90241dfccc5ab96a3d2c3133af9c3ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D75 16096 bytes

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