Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee1f12db33597b66…

MALICIOUS

PDF

78.1 KB Created: 2021-09-19 15:45:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 1874b874ea9c44772481a9385b5fabf3 SHA-1: f4b4968cadfa29556f5ffa4d30d96bb9f89ad517 SHA-256: ee1f12db33597b662d38fa37512404b39546279b2b6c921d8eb858f8c70f494a
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV and an ML classifier, with heuristics indicating embedded JavaScript and external URIs. The PDF contains numerous links to external domains, suggesting a phishing or malware distribution lure. The embedded JavaScript likely facilitates the redirection to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://wastran.ru/uplcv?utm_term=lightroom+cc+2019+free PDF link annotation
    • http://fantacyhandicraft.com/userfiles/file/fanovuxa.pdfIn PDF document text
    • https://unitytradefze.com/ckfinder/userfiles/files/80354350572.pdfIn PDF document text
    • https://brincandoeaprendendo.com/fotosempresa/files/berevavokepipabuvolasixiz.pdfIn PDF document text
    • https://www.alugutader.fr/ckfinder/userfiles/files/97339513167.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/76da350db977cd30ba0a16ac0ed833b4/39416774971.pdfIn PDF document text
    • http://gorisum.net/fckeditor/upload_file/file/28291802379.pdfIn PDF document text
    • http://vattucongtrinh.com/userfiles/file/63850757631.pdfIn PDF document text
    • http://gold-carsales.com/js/upload/files/81431391939.pdfIn PDF document text
    • http://pscemetery.com/userfiles/file/gugoxipasexovofakofef.pdfIn PDF document text
    • http://glassick.com/userfiles/file/15757391869.pdfIn PDF document text
    • https://dichvuhappyhouse.com/upload/files/jumiromimujubufedovutasix.pdfIn PDF document text
    • http://easy-sleep24.de/shop/images/editorfiles/file/bevot.pdfIn PDF document text
    • http://shengnabei.com/uploadfile/file///2021091520505172.pdfIn PDF document text
    • http://2446665a.ru/ckfinder/userfiles/files/denakudonibu.pdfIn PDF document text
    • http://fongyoskert.hu/userfiles/files/ragedobopitur.pdfIn PDF document text
    • http://artkulinaria.pl/sites/default/files/file/pojijiruvubuvuz.pdfIn PDF document text
    • http://aolisenjiancai.com/data/files/xafireduwipiluwimajepo.pdfIn PDF document text
    • http://girisimcilikproje.com/resimler/files/watimezisodovitazovawozil.pdfIn PDF document text
    • https://www.iieng.org/editor/ckfinder/userfiles/files/28885797898.pdfIn PDF document text
    • http://kingswaytyres.com/project/kingsway/uploads/file/18190860156.pdfIn PDF document text
    • http://rejs2013.cycling-recycling.eu/imgturysta/files/45228948463.pdfIn PDF document text
    • https://pharmnet.cz/ckfiles/files/files/rifujerofosavalatotafi.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_off0000c0f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0F2 22028 bytes
SHA-256: daceb95ba087ff4ac9840f5b640e43f7b40c6ed6241c78096387a7de4fadbaa9
font_01_sfnt_off0000f9d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D9 10720 bytes
SHA-256: e365358bb7ea24ba7c6d8fb934d3fb0ac9d1195d422334c951e438079eb0bc0b
font_02_sfnt_off00011297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11297 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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