Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ad5cfd11346fe3d…

MALICIOUS

PDF

68.5 KB Created: 2021-10-01 13:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: e4ac98b2a8d1919e418697f33ef0092f SHA-1: ebddbab5408404d7b226abb94958bc2381705fa9 SHA-256: 2ad5cfd11346fe3df72f84f000ab3b74e22b44e0c7c2adb4ffba93f7ca16dfc0
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, indicating an attempt to redirect the user to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of JavaScript points to an attack pattern involving client-side execution to facilitate further compromise, likely through downloading additional payloads or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://queure.ru/uplcv?utm_term=worms+zone+download+apk PDF link annotation
    • http://pk.mo/userfiles/file/fuzusesik.pdfIn PDF document text
    • http://aviafond.ru/userfiles/file/velepujonalodegekepexenek.pdfIn PDF document text
    • http://hferrynetworks.com/FileData/ckfinder/files/20210920_34C6B24A2CDFB560.pdfIn PDF document text
    • http://garage-fuji.jp/js/upload/files/paromixasipax.pdfIn PDF document text
    • http://nwatchonline.com/userfiles/file/wefuduj.pdfIn PDF document text
    • https://devcons.org/uploads/userfiles/files/94696748897.pdfIn PDF document text
    • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/700o1d9alei7oqs4p0i1cak6m7/fafiwanob.pdfIn PDF document text
    • http://taiwanquinoafamily.com/shopadmin/upload/files/91921525862.pdfIn PDF document text
    • http://kvarkeno56.ru/userfiles/file/jolewa.pdfIn PDF document text
    • http://escalierdurire.fr/ckfinder/userfiles/files/wizavava.pdfIn PDF document text
    • http://conservativista.com/js/ckfinder/userfiles/files/gavitexabofisom.pdfIn PDF document text
    • https://salwangurugram.com/files/11748133832.pdfIn PDF document text
    • https://www.tri-or.fr/tri-or/ckfinder/userfilesfiles/68345027639.pdfIn PDF document text
    • http://safaraval.com/basefile/safaravalcom/files/2826929494.pdfIn PDF document text
    • http://portofmiamitunnel.com/system/js/back/ckfinder/userfiles/files/42555959013.pdfIn PDF document text
    • http://lejonhund.com/upload/tatizudabiregate.pdfIn PDF document text
    • https://pypconsultores.mx/userfiles/file/jawogesokilen.pdfIn PDF document text
    • https://bursaphotofest.org/uploads/files/72614340438.pdfIn PDF document text
    • http://www.fdconsult.qa/public/uploads/cms_files/pazusolireb.pdfIn PDF document text
    • http://longarmquiltacademy.com/fckeditor/userfiles/file/7375723088.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/3bb8bf37454b7b11b615aafea494219b/14850954724.pdfIn PDF document text
    • http://forma8.kz/ckfinder/userfiles/files/25011322896.pdfIn PDF document text
    • http://coomargroup.com/ckfinder/userfiles/files/20315646190.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ad2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD2A 15512 bytes
SHA-256: add03e98e0fb7ab7db77df12c44e7f50f395bc95226d9be734e26009cca0a8a7
font_01_sfnt_off0000d47f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD47F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ec96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC96 10596 bytes
SHA-256: bfddae0dd3bb67c3ed8e883e64be0f514eef3b5cfbc58a879bd8bc23745103fd

Open this report in the interactive analyzer, or submit your own file for analysis.