Malicious PDF — malware analysis report

Static analysis result for SHA-256 742050b013042374…

MALICIOUS

PDF

109.0 KB Created: 2021-06-26 23:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 9a5b24adcd1133a95edf537d4fc5945b SHA-1: 91d9ccdc1ac312ddd0867e11e5906912fda21866 SHA-256: 742050b013042374a314c64aa3fd42464c0002d2bf151c083d626c788bd9a1cf
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a link farm pointing to numerous compromised websites, many of which host other PDF files. The ML classifier strongly indicates maliciousness, and the heuristics identify these links as part of a compromised CMS upload storage strategy. This suggests the document is designed to lead users to malicious content, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • 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 http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081ca25b97f4---povilusu.pdf In PDF document text
    • https://bda.ch/ckfinder/userfiles/files/lasemototolagimo.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/16084f5368d0df---milonofime.pdfIn PDF document text
    • http://kursadowicz.pl/Upload/file/zudureget.pdfIn PDF document text
    • http://meskerjager.nl/media/files/48846871013.pdfIn PDF document text
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/3b2aum23phod29516jnofan962/73717727774.pdfIn PDF document text
    • https://verandapattaya.com/userfiles/files/30134953182.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/59419782072.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/h1l95tmvoft1tq9bvlv9iabprl/2231677269.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0c46cb745b---fefozefu.pdfIn PDF document text
    • https://cavalier-hundezucht.ch/userfiles/file/99402284348.pdfIn PDF document text
    • http://karthikeyanjayaram.com/userfiles/file/xumijomo.pdfIn PDF document text
    • http://teraval.cz/res/file/12185242414.pdfIn PDF document text
    • https://agronlogistics.com/userfiles/files/54075398192.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/1ce0a1479b9ae7eee87964ecd2454710/48118963091.pdfIn PDF document text
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/dbcbq9r63hf9e2k5dcrh4jarmi/91510854302.pdfIn PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/5hu11ef5vkf867kf8cofvfb5s5/xabarokaxumufa.pdfIn PDF document text
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/160846f93b238f---gubujevokajekewobubebifod.pdfIn PDF document text
    • http://yaeram.com/userData/board/file/folilo.pdfIn PDF document text
    • https://aedwea.com/upload/foto/55629983022.pdfIn PDF document text
    • http://mobilesamara.com/img/files/file/8621096336.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ab68ef1a949---xudumor.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/1607816d7af0ce---40560722818.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=gre+awa+sample+essays+with+answersPDF 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_off00014aa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AA2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000162b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162B4 17044 bytes
SHA-256: b35b65e4b84fbc81ac0bffff4b612785cd4bfc8084c12ef008bc21ac55a30fcd
font_02_sfnt_off00018e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E84 10636 bytes
SHA-256: 80ef6d662a3c272c10ab523fbd3051e6b60c02a91275b314670ab3b2ea1d4d9b