Malicious PDF — malware analysis report

Static analysis result for SHA-256 575eb21b3dc7dd34…

MALICIOUS

PDF

95.4 KB Created: 2021-07-21 16:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: ce0b6a8bca5edca457e76766222db408 SHA-1: 6b5cad181d49071597d8f55c2fa22d6a2bfb99a3 SHA-256: 575eb21b3dc7dd34cb455088473f2ca6e0be7a6eee632ef8fb4fc183f2e97982
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm pointing to multiple compromised WordPress sites, which in turn host other PDF files. This suggests a multi-stage attack where the initial PDF serves as a lure to download further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

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://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/3e1e8f6e27d3d52c50355f3a24a02cb1/gosizipulogifanoxaja.pdf In PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d1dda8557f---24005124607.pdfIn PDF document text
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/eeb683c9f3032f22bd1a04a2cfe55ffe/jilexegelib.pdfIn PDF document text
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c9471fbec78---12806220241.pdfIn PDF document text
    • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/8c5b7f5047a8a562e610c673d832491e/40398331606.pdfIn PDF document text
    • https://cecprint.com/images/file/24376952243.pdfIn PDF document text
    • http://angelescare.com/userfiles/file/busakagilililimelapelur.pdfIn PDF document text
    • http://amdind.com/userfiles/file/fobafofojiluwisowejetu.pdfIn PDF document text
    • https://psiakocky-potisk.cz/webpagebuilder/ckfinder/userfiles/files/zewodaduxumoluveduwute.pdfIn PDF document text
    • http://podiummoda.ru/userfiles/file/rekiwebeja.pdfIn PDF document text
    • http://au-coeur-du-temps.com/userfiles/file/rofelatat.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b76c9a7367e---38003135122.pdfIn PDF document text
    • http://fields-on-earth.com/92891625484.pdfIn PDF document text
    • http://beveragesgs.com/userfiles/file/pexofedajifu.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0cf7e9f622---vidorolo.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/31e3dae7f0ebe83dfca2f075a3fcaf1a/xiviramuxivizida.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/76tqqppo6606gl0gd0isivjl0o/kipididojemetusafag.pdfIn PDF document text
    • http://elm3rad.com/file/40514014359.pdfIn PDF document text
    • https://ewdel.cz/ckfinder/userfiles/files/ziworigitifepabobivutuk.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/16080c9000a9c6---47705158100.pdfIn PDF document text
    • https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/046d4bc254f37b27879e378095962d06/darodomedadovoj.pdfIn PDF document text
    • https://coluer.ir/documents/file/53524834119.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/mesojemisumafozodonik.pdfIn PDF document text
    • http://ildungrice.com/fileupload/fckeditor/file/masebuk.pdfIn PDF document text
    • http://www.vikingmaterials.com/img/zawurinixotajutujud.pdfIn PDF document text
    • http://qiangka.com/ckfinder/userfiles/files/45192758181.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=the+creation+of+adam+fresco+painting+by+michelangeloPDF link annotation
    • 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_off00010ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE4 17892 bytes
SHA-256: 0bb365592fe684323435b76b983186c67df386f59ebbcbb28a42ffb16fd9cc82
font_01_sfnt_off00013b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B99 11284 bytes
SHA-256: 7fffbf5efb43cb70e6d6f9ed896e53b58df9d3d149c2bd35d7450ca58645c2f1
font_02_sfnt_off00015580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15580 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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