Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3292693ea2b23c7…

MALICIOUS

PDF

81.3 KB Created: 2021-03-16 09:32:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 63fa6690ad91d5b2fa1c1c25a0e5148f SHA-1: 10bd2506e307cdea79e33cf58423bb952186bf5e SHA-256: c3292693ea2b23c7961acf6acff79307dd0ead8e60f8ff852fdbd0f98b0b3485
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://baarspo.ru/wix?keyword=northwood+high+school+md', suggesting a phishing lure related to a school search query. Numerous other suspicious URLs were also extracted, indicating a likely attempt to redirect the user to a malicious site for further exploitation.

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://baarspo.ru/wix?keyword=northwood+high+school+md PDF link annotation
    • http://banquepopulaire-fr.org/switch_lite_price_walmart8z40y.pdfIn PDF document text
    • http://fofiwafajelerax.sportsontheweb.net/astro_a20_ps5_3d_audio.pdfIn PDF document text
    • http://vadosaj.getenjoyment.net/24884185443.pdfIn PDF document text
    • http://collegegraduatecentraldating.com/nidafetag0besg.pdfIn PDF document text
    • http://moneymaya.site/kavaturusikupigelj7a1y.pdfIn PDF document text
    • http://jisuvakuwiraza.medianewsonline.com/64639252368.pdfIn PDF document text
    • http://paxezot.getenjoyment.net/9492004778.pdfIn PDF document text
    • http://pirunumilusarib.sportsontheweb.net/libro_la_meta_resumen_por_capitulos.pdfIn PDF document text
    • http://jamotovoxut.mywebcommunity.org/11_algebra_questions.pdfIn PDF document text
    • http://nanebaxexob.getenjoyment.net/1878224643.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/regovadeje/tumitekekagedujanoduz.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/job_bid_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/how_do_they_take_an_ecg.pdfIn PDF document text
    • http://visobiwedixupip.rf.gd/75812998023.pdfIn PDF document text
    • https://s3.amazonaws.com/popilo/powered_wheelchair_assessment_form.pdfIn PDF document text
    • http://muwaziri.epizy.com/86118604062.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/here_alone_full_movie_480p.pdfIn PDF document text
    • http://tefefusojobus.rf.gd/sekodirolakefi.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_off0001003f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1003F 5204 bytes
SHA-256: e36074e80060609d1db46b14b21dd12823ff7e4cf7211f76a7bace143e48f910
font_01_sfnt_off000111e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111E6 11388 bytes
SHA-256: 84ff131dd12565f9ed53eaf8fbfe9a0f591709d1bad2573163093ff03e8c61f1

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