Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e157f2b5e72891…

MALICIOUS

PDF

78.9 KB Created: 2021-10-23 14:07:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: e961e05ca0efd9276d9865398fb5d232 SHA-1: 75189fed733f6109872b20f7347f5231439e3d97 SHA-256: d3e157f2b5e72891c1b182cebd90e6c0e6b208b49cfb5d56d1ef322246c4307a
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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 http://mitroc.com/userfiles/file/27038734429.pdf In PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/go9rac83270j7sbashpp5sv877/955146193.pdfIn PDF document text
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/b18c35ba64d972a1a4b5bec635addbed/81326770016.pdfIn PDF document text
    • https://marathonroller.com/userfiles/files/35452315696.pdfIn PDF document text
    • http://villabrown.it/userfiles/files/kivunaxaj.pdfIn PDF document text
    • http://needychild.org/ckfinder/userfiles/files/getamenanamep.pdfIn PDF document text
    • http://wideanglepackaging.com/ckfinder/userfiles/files/85262031879.pdfIn PDF document text
    • http://toyotacri.com/userfiles/files/gobazimowepuxog.pdfIn PDF document text
    • http://vinabomi.com/uploads/userfiles/file/86463809745.pdfIn PDF document text
    • http://gimhaejazz.com/fckeditor/userfiles/image/72915492083.pdfIn PDF document text
    • http://montpellier-business-plan.fr/mbp/upload/images/images/upload/ckfinder/55086049172.pdfIn PDF document text
    • http://pbpharm.com/upload/files/92991758209.pdfIn PDF document text
    • http://ux02.wadhost.com/js/ckfinder/userfiles/files/palawunubix.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613f39f06ae67---32447395719.pdfIn PDF document text
    • http://babyindex.nl/images/uploads/pijuxulovul.pdfIn PDF document text
    • http://webs.eusko-ikaskuntza.org/files/galeria/files/jiwedojura.pdfIn PDF document text
    • http://heathrowairporttaxi.website/userfiles/file/dowufuvaguzef.pdfIn PDF document text
    • http://rklatex.com/userfiles/file/lijan.pdfIn PDF document text
    • https://nk-sostanj.si/files/file/45646097384.pdfIn PDF document text
    • https://responsible-tourism-alliance.com/content_file/files/zopofujin.pdfIn PDF document text
    • http://lucchetta.net/userfiles/files/bekaxivoduw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/RC0zOYPQW8A/uplcv?utm_term=gangrenous+appendicitis+with+perforationPDF 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.netReferenced by PDF JavaScript
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseReferenced by PDF JavaScript

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE91 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e6a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A3 17276 bytes
SHA-256: 911fe6a9e0447e98bfe93989947d04e2db478b3d2a60453f14d6d422482f1fd5
font_02_sfnt_off000113d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113D5 11076 bytes
SHA-256: 5ad952708a5999e786ef0eb433e9577b69dc7e4ef45e3cddb57a11738fdf2fe3