Malicious PDF — malware analysis report

Static analysis result for SHA-256 40d5dca33d76c1b8…

MALICIOUS

PDF

100.0 KB Created: 2021-03-15 05:03:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9dcd8930738c6ccb2a6bafdd1cef87f SHA-1: 533d18296214fce18512dedfba13d20dd32d221c SHA-256: 40d5dca33d76c1b8815eeae441ebbe6a747b950b8b1e323d8b5387dcfafb3e8e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit users through a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://jacksth.ru/wix?keyword=club+penguin+oasis+item+codes
    • http://befujukipepejem.mygamesonline.org/55082971082.pdf
    • http://pofuxubilet.sportsontheweb.net/how_to_reset_triple_diamond_slot_machine.pdf
    • http://zodimasar.mypressonline.com/35664624410.pdf
    • http://samoe-samaya.ru/9068829096kg932.pdf
    • http://topcreditcheck.info/40631338358ps5r5.pdf
    • http://watogoda.mypressonline.com/8603815284.pdf
    • http://jadogaxarabu.mygamesonline.org/novecento_alessandro_baricco_gratis.pdf
    • http://digosige.mywebcommunity.org/94538759132.pdf
    • http://funseeds.site/goburazaxosixwa183.pdf
    • http://znasila.ru/lijepafmp4r.pdf
    • http://linodogeb.scienceontheweb.net/57514224755.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/tobobowu/tipos_de_planes_de_retiro.pdf
    • https://e8677ced-6330-435e-8237-200fb10408a4.filesusr.com/ugd/a4c1fa_08689408dfda426d8f68a0902c9eac78.pdf?index=true
    • https://s3.amazonaws.com/wukara/52540613672.pdf
    • http://zesafemumibow.myartsonline.com/9841221839.pdf
    • http://bogurivesinoni.rf.gd/phpexcel_spreadsheet_table.pdf
    • http://xodamekexu.epizy.com/are_there_any_new_covid_cases_today_in_nb.pdf
    • http://lexafuz.epizy.com/dabamobewel.pdf
    • http://dopovis.myartsonline.com/94889715615.pdf
    • https://s3.amazonaws.com/pewebopufupe/manchester_city_chelsea_match_report.pdf
    • http://losiwuraxa.rf.gd/best_romantic_fantasy_book_series.pdf
    • https://e9155d39-0f7d-4366-9ee8-34e17fe3d773.filesusr.com/ugd/9e05b8_2fbaf63cc9a74cf3b7190c7b841f2ce2.pdf?index=true
    • https://s3.amazonaws.com/zarevizebi/86401677117.pdf
    • https://313cea95-bd78-4864-9d9d-3b26c3bbe0bd.filesusr.com/ugd/2142af_e7721407b68b4deca5a10b0971f3aaca.pdf?index=true
    • http://davafegi.epizy.com/kadubunazuzebugas.pdf
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013a49.bin
c12ea9552749dd4575ec89dad3d4bfdb7fd9b642bf20a9ce3054318c92264ed1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A49 5344 bytes
font_01_sfnt_off00014c53.bin
e2182d415e4a4b602699c551eddd404d239c29c9785ef117dcccbb65f7b15ac2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14C53 11296 bytes
font_02_sfnt_off000172d8.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x172D8 4324 bytes

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