Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8c4adbb6ec96a7d…

MALICIOUS

PDF

66.0 KB Created: 2021-02-10 19:55:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b8e143523142235ebb39c337be77c884 SHA-1: 04a9d8fa12c0bee10e960ba2c3a49df78ae935d8 SHA-256: a8c4adbb6ec96a7d7ff5c160ee6cab85fceaeb65a6d97fa6c6483421eb9a0b76
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, identified as a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of an external URI and embedded URLs suggests the document is designed to redirect the user to a malicious site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=arrival+abba+sheet+music PDF link annotation
    • http://tejitotu.iblogger.org/xefedigofivefex.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/kXic106/supertanker_capacity_litres.pdfIn PDF document text
    • http://masajsalonunuz.com/wibekuzanepalwojw.pdfIn PDF document text
    • http://lnstagram-copyright-supports.com/6311809609814z0u.pdfIn PDF document text
    • http://usecabinets.xyz/binasepetodoxowonahzxa3.pdfIn PDF document text
    • http://dvestideyli.xyz/xifiminayt07v.pdfIn PDF document text
    • http://masito.space/46817277711ilf5z.pdfIn PDF document text
    • https://cdn.sqhk.co/kufomopinu/hgjPibs/satotesazurinibisekiw.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/baxekojojexusol/ralazididafuwigumosudejon.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/crohn_s_disease_acg_guidelines_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/rolinazalewev.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/83321391690.pdfIn PDF document text
    • http://bewidiri.rf.gd/school_bus_pass_application_form_tamil_nadu.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/short_vowel_phonics_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/cheatsheet_font_awesome.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/banjo_movie_400mb.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC321 5228 bytes
SHA-256: 7360a9811ea80c84940e5c9347ac71595bd38bf950ecca48d8c2bb4452a96e3f
font_01_sfnt_off0000d4c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C2 11324 bytes
SHA-256: 9e65e35ae9199c8e4752bc4ff8a98997f84335567b56130dc051b118dd6a95d1

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