Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2ded6a6eea7ce09…

MALICIOUS

PDF

85.8 KB Created: 2021-07-23 09:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 277fe920eb9235d8b221eb7e354ee412 SHA-1: 0cf8fab30b12c89a4bdd378fe342927bb851dcd5 SHA-256: e2ded6a6eea7ce094caf5056455aa1ad2e9acdf619693ad8b7ff76bc684730b3
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to compromised WordPress sites, likely intended to trick users into downloading a payload. The presence of multiple PDF link farm heuristics and the specific ClamAV detection name further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/12d7b40185ae71ca9439ff9e3856412b/pesegepusiwoz.pdf In PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e436b130c3---welodolup.pdfIn PDF document text
    • https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/76b871e44f05929179bb77b56bcbf9cd/soluwimal.pdfIn PDF document text
    • http://pinturasoltra.com/images/slider/files/mikasopujosemado.pdfIn PDF document text
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b646254a2a9---19724778383.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c57c65ba1ea---sogatesuxotodidadabuzi.pdfIn PDF document text
    • http://amctop.com/board_data/editor_img/file/202106060726.pdfIn PDF document text
    • http://ozona.pt/wysiwygfiles/file/bewowuso.pdfIn PDF document text
    • http://meruzhankhachatryan.com/app/webroot/files/file/jekevekisuromow.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f392fea0df---kilojubep.pdfIn PDF document text
    • http://globalquestconsulting.com/userfiles/files/latuxidiba.pdfIn PDF document text
    • http://childconnect.com/swi/fckfiles//file/wepiwimufesedog.pdfIn PDF document text
    • http://w-f-l.de/user_img/file/60535494762.pdfIn PDF document text
    • https://xn--fct8ml6mwue.tw/uploads/files/73855457877.pdfIn PDF document text
    • https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/36bec79695499ca2639735801bc18b19/ferinamitigavusivulanus.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/0dc2c8dd5ae3b5950177305434fc1322/belekekawemezuwupa.pdfIn PDF document text
    • http://okmarin.ru/userfiles/file/powitogukurupodokasa.pdfIn PDF document text
    • http://analogsys.com/uploaded/file/80985598960940d86641ac.pdfIn PDF document text
    • http://fygl.net/uploads/file/261321331543.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/brriast67m7k9t14b9jtknqni0/gubaku.pdfIn PDF document text
    • http://bigband-ulm.de/userfiles/files/nejuseba.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c785d4ca24a---kodalonijaresefefima.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072ce87c5758---38826977105.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/9a8a6b7e5d260f813bf747fea9dda9d8/rezezibu.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cc64cf642dd---rurixasimuzojefojufiw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=driver+easy+pro+cd+keyPDF 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_off0000ec4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4E 10532 bytes
SHA-256: b8a733914fd1938e9f860269485833eb734fcc45db22d345f9fa9ea5478d93d1
font_01_sfnt_off00010478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10478 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011c8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C8A 17156 bytes
SHA-256: 38b59e05d16f503bb58e24c23aa21a4a6a128685acac47a5d41e6cdfe25bd52f