Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6bf0c90576ec0b8…

MALICIOUS

PDF

296.7 KB Created: 2022-06-05 16:38:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 8137da0bad02a9206cc090214e8f73e0 SHA-1: e19f8d53e590c7ec02d5182a34a0935ed5ddfb06 SHA-256: d6bf0c90576ec0b8b050f6bbc6880985f7b0d715ce8c1139a12fb5e24b688f4a
104 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URLs, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. The presence of embedded JS points towards potential exploitation or redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6289

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://sunuf.co.za/XSRYdR1H?utm_term=factor+quema+grasa+pdf+descargar+gratis+descargar
    • https://doublehaircenter.com/upload/ckfinder/files/22337052898.pdf
    • https://www.highlandernepal.com/assets/ckfinder/userfiles/files/purugemuwekesafuv.pdf
    • http://vitalchurchesinstitute.com/files/file/1265333618.pdf
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/r9fo6ujqij23b7no7efb10iu89/nezolopevif.pdf
    • http://erh-hu.com/userfiles/file/5967356988.pdf
    • http://dns1.lineshare.net/upload/files/20220505091817.pdf
    • https://smartmedia.ro/app/webroot/files/userfiles/files/rorufirokirodixafepifi.pdf
    • http://yas-center.ru/userfiles/file/65298627543.pdf
    • https://baduninenivogov.weebly.com/uploads/1/3/4/5/134589003/8747147.pdf
    • https://badevejolaf.weebly.com/uploads/1/3/4/8/134867981/lebepinijibiwo_jebojegusiwanul_wosesixij_zowenatije.pdf
    • https://komojagalon.weebly.com/uploads/1/3/4/8/134885500/laxawananuwaxum.pdf
    • http://www.forsheda.se/admin/kcfinder/upload/files/dibijexakutib.pdf
    • http://www.slappedtogether.com/editoruploadfiles/file/lutugijuzujopisek.pdf
    • https://surjyamgroup.com/ckeditor/upload/files/23953352021.pdf
    • https://kuvixajixi.weebly.com/uploads/1/3/1/6/131637850/tujabe_kaxebavewewi_najibes.pdf
    • http://usarsenal.it/userfiles/files/dovegudoliwa.pdf
    • http://veoguidecostarica.com/ci/userfiles/files/88170225.pdf
    • http://gira-classix.su/kcfinder/upload/files/67588483932.pdf
    • https://rozulotefuvope.weebly.com/uploads/1/4/1/4/141429736/zukiwunudarazu-desumibobel-sumafixi-xolobalupilaxi.pdf
    • http://hastensandbreakfast.nl/userfiles/file/jamigurovemaxikiwisarege.pdf
    • http://apartmany.cucoriedka.sk/data/files/85909091642.pdf
    • https://mipixapotorifa.weebly.com/uploads/1/3/0/9/130969355/c798bf43da35.pdf
    • https://dokodajibebabek.weebly.com/uploads/1/3/2/3/132302773/bivelopotigekeki.pdf
    • https://garagagu.weebly.com/uploads/1/3/4/3/134364865/midute.pdf
    • https://semopuwelonime.weebly.com/uploads/1/3/1/8/131856984/zupipowomuri_zuxoboveri_muzepo_vozagoges.pdf
    • https://alhasooncorp.com/Files/files/31659847098.pdf
    • https://gekojivigi.weebly.com/uploads/1/3/1/0/131070255/8640860.pdf
    • http://groupeao.com/app/webroot/js/kcfinder/upload/files/kezoz.pdf
    • http://smartbazar.online/app/webroot/upload/files/78032641750.pdf
    • https://kevadogat.weebly.com/uploads/1/4/1/4/141435236/4394314.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000425a2.bin
2e2fcc01357805debc8e9d1ba518063954ae3b024e9968a0746d254272dd93ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x425A2 11036 bytes
font_01_sfnt_off00043ee1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43EE1 16792 bytes
font_02_sfnt_off000456f3.bin
b28ac53a2ccd3b4fb616dc51760461d552927900c9b110cecc534e8590c8047d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x456F3 22628 bytes

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