Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbdcf296230c9ed2…

MALICIOUS

PDF

83.8 KB Created: 2021-03-22 19:15:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 70b418a38a31d43c3deb7e60a93e6f70 SHA-1: af5d2bc2ac9892fb30cd9feea401b70e0ee314d1 SHA-256: dbdcf296230c9ed235a7fb8039cc69b78bf3aa269a49e7b7b02c71d49792c6c2
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a lure related to 'Hund rule and aufbau principle'. It embeds a URL that is flagged as suspicious, suggesting an attempt to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.

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://xajibur.ru/award?keyword=hund+rule+and+aufbau+principle+pdf PDF link annotation
    • https://cdn.sqhk.co/savimatuv/jijjhja/jusekeludonoburije.pdfIn PDF document text
    • https://cdn.sqhk.co/lekusovu/Vxbhegf/dead_zed_unblocked_weebly.pdfIn PDF document text
    • http://rekilafemet.iblogger.org/adobe_air_offline.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/CtjdgtM/fast_money_halftime_report_cnbc_fix.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/zerepuzuze/is_the_bear_in_the_revenant_cgi.pdfIn PDF document text
    • http://wuzugimekiwetad.epizy.com/boseroxo.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/participation_trophies_are_bad_essay.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/kutebupofalinugixunad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/146f0d0e-2b74-46f9-807a-2f43190477a8/how_to_get_your_company_iso_9001_certified.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/23029767589.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/evaluating_expressions_with_integers_worksheet.pdfIn PDF document text
    • http://gagelenobom.epizy.com/angiografia_de_miembros_inferiores.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/57763825439.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/ice_sheet_geographical_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4ac1b8e-3075-4d7b-b822-57bcf225c506/2010_chevy_camaro_ss_automatic_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/72740964945.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/tinerudinizesulogabulesor.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/big_sur_jack_kerouac_analysis.pdfIn PDF document text
    • http://fugovolit.rf.gd/8500044138.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_off00010926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10926 5072 bytes
SHA-256: 7e21e65ea9dec28befd450d691b932688f8f19f51305ad5c0e7bb3fbca017201
font_01_sfnt_off00011a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A6F 11668 bytes
SHA-256: 13df247edb8054d3c52d40848eae1a6d837800e15d1702cc6235d30dd7710e4d

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