Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee6932ecb0cceaf…

MALICIOUS

PDF

79.7 KB Created: 2021-09-04 13:38:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: e3bac475dc8626c01525cef6c949bfb2 SHA-1: bca156fcb19ce0a29db748a23ae35a59799a8eda SHA-256: 7ee6932ecb0cceaf9ef4015eea3dab537fa53c9e11bc520abbb171935c6495c6
156 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a phishing or credential harvesting campaign. The presence of embedded URLs and the nature of the links point towards an attempt to redirect users to malicious sites, likely to download further payloads or steal information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • 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://cructi.ru/uplcv?utm_term=convert+pdf+to+word+editable+free+online PDF link annotation
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1a97d8b219---figina.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160b16d1ab8e43---veruzomikelukamemeb.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16094688663336---bixireruxojuxenar.pdfIn PDF document text
    • http://alexanderjamesbackcatalogue.com/userfiles/file/55800450421.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/pbphfpa2s64gdjq3jo590pjt15/38629106813.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/e47d1d389957639d520953537f20e358/1421438620.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081910a05c2a---metija.pdfIn PDF document text
    • http://bukharaalpharetta.com/sites/default/files/file/wuboximobu.pdfIn PDF document text
    • https://gastrotest.co/ckfinder/userfiles/files/seriludapir.pdfIn PDF document text
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/2kr0di0l32aqaihomv59no865a/muzilifewaner.pdfIn PDF document text
    • https://netcsemege.hu/ckfinder/userfiles/files/22735363555.pdfIn PDF document text
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/2qka6mis5g1l1nlic8j50ha2fd/bavoxo.pdfIn PDF document text
    • http://solarhomepage.ch/fckeditor/editor/images/file/81118482465.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/f15aa03c80538d25a124495450314bab/71405160174.pdfIn PDF document text
    • http://bbbswalkforkids.com/clients/c/cf/cf8d0549bdc9bbdffca8bc0db9808b96/File/gebagavazonokomap.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094caa556e14---mexavok.pdfIn PDF document text
    • http://sumterhigh89.com/clients/863574/File/bajodedubajumit.pdfIn PDF document text
    • http://kmkonsult.cz/userfiles/file/gedudevuvapatunitil.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1611fc06c751a7---97282542702.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099f28b84a60---namorukutopuweja.pdfIn PDF document text
    • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/l99sff64tbotbldh3knhgd6tb5/zuwazizimo.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/85vpn0ptpgihr9e40roocqe8nq/lepakenorosedonoj.pdfIn PDF document text
    • http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/milazodisavudi.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/gomopetoxomelajup.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160cad8b8afc24---lepij.pdfIn PDF document text
    • https://www.tratedu.net/ssss2018/assets/143ad273/ckfinder/core/connector/php/upload/userfiles/files/7dd78e2e2566b5817764105c43de1719.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160b16b9ddbf2c---posajubolozeni.pdfIn PDF document text
    • http://ux-school.ru/files/files/zaxawizake.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_off0000d2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B1 17756 bytes
SHA-256: 455da3eb8d49d129157e3cde02a4d4dfd396f4a9be6effde4cb5d64a5c78a917
font_01_sfnt_off0001002b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1002B 10644 bytes
SHA-256: e1620aa072e3d59bbb6149c8b3f56ebd372fa688170c943bd693fdbd36e9df3f
font_02_sfnt_off0001187f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1187F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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