Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ae76e12be8fac24…

MALICIOUS

PDF

87.5 KB Created: 2021-08-13 11:35:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 71ca2c08aa2d240975651d736e1060c2 SHA-1: 09a4b43a9ca497b8985d99813baca9c3a0af22dd SHA-256: 6ae76e12be8fac248b4590ea51f522eec5547c02a537ef35742d81212e117564
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains embedded JavaScript, which is often used to exploit PDF reader vulnerabilities or redirect users to malicious sites. The document also features a large number of external links, many hosted on compromised WordPress sites, suggesting a link farm designed to distribute malware or facilitate phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • 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.
  • 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://nomylo.ru/uplcv?utm_term=contrat+vente+entre+particulier+roulotte PDF link annotation
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f7b440acc8---nozajifisusup.pdfIn PDF document text
    • http://canadanur.com/resimler/files/39352481331.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/5bc683a634d61ea13009cac256a3f572/37228424265.pdfIn PDF document text
    • http://syntra.pl/userfiles/file/xoturonofufubebu.pdfIn PDF document text
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089c70959af6---pidefesavusubaminubuxute.pdfIn PDF document text
    • http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/89471e3f54898fe700e611a1de05f959/16710351182.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094528a9fd73---wanesisasesojifatos.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/ed4b86716e4fc1b8b62ac0b75bdd781b/47739504626.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a998a869fde---jurireg.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/fd346eac8921ca9fff90d258a05b8915/76656733134.pdfIn PDF document text
    • http://myjacksonfamilyreunion.com/clients/e/e2/e2167ce47089e9b789d53270b7cccc99/File/juwitanojurilopujuwazapi.pdfIn PDF document text
    • http://to-kajihan.net/js/upload/files/9424041049.pdfIn PDF document text
    • http://zhatuogz.com/uploadfile/file/12887497852.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/nisekudidarawusi.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bd50b3d24e7---19882730093.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/9ed1ee721349085f547fd22068af3394/rizekopatunugaduvufezefed.pdfIn PDF document text
    • https://sport-jicin.cz/dokumenty/bilosolo.pdfIn PDF document text
    • http://xn--80aatg4aaaddkhfhbf3evf.xn--p1ai/ckfinder/userfiles/files/72540976274.pdfIn PDF document text
    • http://eastmoorclassof1970.com/clients/4/43/4343e427eb1b0a0668350338a4d6b623/File/mefusijaledej.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/c4d206d19bb1f001499f3818bd04ede7/44894357082.pdfIn PDF document text
    • http://bsp-plovdiv.org/ckfinder/userfiles/files/xasiroxuj.pdfIn PDF document text
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/853d6366b9200ba2da68300588ef1754/15158774332.pdfIn PDF document text
    • https://distriparkbotlek.nl/userfiles/files/27840710452.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_off0000edfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFB 19220 bytes
SHA-256: a6d862be56a47800bc3682f5f006eeeda99ff10fb7372b83d25aa86806510ecb
font_01_sfnt_off00011e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E44 10396 bytes
SHA-256: 525896bf5850b0311e9785c2def3c2f29bfa0c0967fa6f6b887971112a241498
font_02_sfnt_off000135ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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