Malicious PDF — malware analysis report

Static analysis result for SHA-256 a952e98d2c7f82b3…

MALICIOUS

PDF

76.1 KB Created: 2021-02-20 04:40:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 4081ba1fb64724977f3378e03509ed41 SHA-1: 5a46ba4a72e69942bce4a81c0f3852b9beb2ca50 SHA-256: a952e98d2c7f82b31a7c1b25420a5917cdb11eeca218412216c12825f2a530a4
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 a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to 'Rosemount 5300 radar' and 'wkhtmltopdf', suggesting a lure related to industrial equipment to entice users to click the malicious link.

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://maypoin.ru/123?utm_term=rosemount+5300+radar PDF link annotation
    • http://subumobo.22web.org/journal_citation_report_impact_factor_2018.pdfIn PDF document text
    • http://paximosikelos.22web.org/bassinet_fitted_sheet_adairs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379612/normal_5fe2a06993661.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418584/normal_6006804ae9353.pdfIn PDF document text
    • http://zasaluto.iblogger.org/dasatanik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412183/normal_5fcaef097aa29.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
    • http://wugilibugixadi.rf.gd/por_una_cabeza_sheet_music_flute.pdfIn PDF document text
    • http://durunorutap.epizy.com/android_charsequence_array_example.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/zajozesajetosa.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/asuran_dhanush_bgm.pdfIn PDF document text
    • http://mosupixozijet.epizy.com/free_math_answers_online.pdfIn PDF document text
    • http://vujulazi.epizy.com/lumozejomorab.pdfIn PDF document text
    • https://s3.amazonaws.com/zowibatev/79487626835.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/69308593721.pdfIn PDF document text
    • http://fugubujilaxi.epizy.com/tafebejalizazot.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/lonugogovupaxozalifevatav.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_off0000d951.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD951 5212 bytes
SHA-256: 6ba3b60e22029dc07ea691a80f14fedc23d0e117f800d4cbebf6db3bf5972af9
font_01_sfnt_off0000eaea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAEA 12964 bytes
SHA-256: 4ca590903ddd251471263b9c19d173ff5de6b63caeb7a9191fc51daf2d15c5a9
font_02_sfnt_off00011403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11403 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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