Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceec39e3a3769e11…

MALICIOUS

PDF

74.3 KB Created: 2021-09-19 19:44:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 28b226ab606a9ea2c1f350426b9ba4cf SHA-1: 6eaf0d9e3ba10f4e2347aa009b17d1051b27afc0 SHA-256: ceec39e3a3769e1138afd24826c23d57c564903ed5ec9fecac931757436144ee
164 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous URLs pointing to compromised WordPress sites, indicating an attempt to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution via a link farm. The document's structure and URL patterns align with known techniques for hosting malicious content on compromised infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/h6v9cftf4lum71a3rhre17d924/fejewamigowiwevinivajefun.pdf In PDF document text
    • http://ewhamd.net/upFiles/ckeditor/files/92306819252.pdfIn PDF document text
    • http://elistaprezentow.pl/userfiles/file/luwafotifojudob.pdfIn PDF document text
    • https://www.bakkersvlaanderen.be/resources/plugins/ckfinder/userfiles/0/files/24051121818.pdfIn PDF document text
    • https://dichvumoinoi.com/ckfinder/userfiles/files/1048823604.pdfIn PDF document text
    • http://dorisemitchell.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tebibakixujoketixebikage.pdfIn PDF document text
    • https://sanruouvang.net/images/uploaded/file/zijolojizukipuf.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/a35f960f4794455f01e9980f29708dcd/dezuteginoruwixufiw.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/45aeefbad6ffbe0a8066632ed143b35b/93654227178.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/cbf463fcfa868d07d19778b7316992e4/pafelujejuxusomereposu.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/a6727ba9ddca00902c4d809f83bf6466/11404621092.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16142491194951---tisili.pdfIn PDF document text
    • http://controldellaves.com/app/webroot/arxius/file/12055910712.pdfIn PDF document text
    • https://trieurodata.ro/images/file/40800540346.pdfIn PDF document text
    • http://mextro.de/upload/files/sijiwi.pdfIn PDF document text
    • https://pt2-turbo-j3t.com/contents/files/vizasununuzuxoludesan.pdfIn PDF document text
    • https://himalayanthailand.com/image/upload/File/6334227540.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/161399221ee682---zomatazazi.pdfIn PDF document text
    • http://girlstown.org/files/js/ckfinder/userfiles/files/doxuvaxarot.pdfIn PDF document text
    • https://vipbeachhouse.com/uploads/editor/file/10427173432.pdfIn PDF document text
    • https://deltarealestate-eg.com/userfiles/file/97372158322.pdfIn PDF document text
    • http://como.gattinonimondodivacanze.it/themes/userfiles/files/73446966715.pdfIn PDF document text
    • http://anoh.net/pds/userfiles/files/gadixaga.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=html+widget+androidPDF 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_off0000c10d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC10D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD924 10500 bytes
SHA-256: c9dcb73f01301ff64079f2141e1baa907daf78a2ae40fed96611da4672ee5dd9
font_02_sfnt_off0000f0b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B7 16640 bytes
SHA-256: 690414a58e3104662d0901dec339da03387e8b31de9a6a3b833ba9cd6563746e

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