Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f3415940d5e66f…

MALICIOUS

PDF

83.8 KB Created: 2021-10-27 09:33:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 1b60f25db245497d83480671c4802452 SHA-1: 9558c36fe5376bae673fd431cde59c9fb9bb2c51 SHA-256: f2f3415940d5e66f9467536c298e366f8bd9126c300454de44be001c72f4070f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and is identified as a link farm, with many links pointing to compromised CMS upload storage and disposable hosting. The presence of embedded JavaScript, flagged by heuristics, suggests an attempt to execute malicious code or redirect the user. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://philabc.ru/uplcv?utm_term=watch+the+first+purge+online PDF link annotation
    • http://tridiart.cl/ckfinder/userfiles/files/fojekirirutuzivudu.pdfIn PDF document text
    • http://cheliabinsk.realxenon.ru/uploads/files/60566225837.pdfIn PDF document text
    • http://travelci.ru/ckfinder/userfiles/files/bufijimaxud.pdfIn PDF document text
    • http://trips-in.com/ckupload/files/pigij.pdfIn PDF document text
    • http://beautybybelief.com/admin/images/file/gonexavadolivipageg.pdfIn PDF document text
    • http://agro-pasz.pl/ckfinder/userfiles/files/71459739524.pdfIn PDF document text
    • http://adhdesign.de/userContent/files/20210917080647-69444491021.pdfIn PDF document text
    • https://rosenstein.lu/userfiles/files/37911419393.pdfIn PDF document text
    • https://colakcivi.com/userfiles/file/xiwivifafu.pdfIn PDF document text
    • http://fusen-es.info/yamituki-n/uploads/files/97090223475.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614f7f853c892---8814442274.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/16142fb72990d1---feboxevinut.pdfIn PDF document text
    • https://muguet.fr/sites/default/files/file/95637273126.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/48bd93f94be4425d558bd8d6bab04b4a/jabifazo.pdfIn PDF document text
    • http://obasekiestates.com/UserFiles/file/jiretopexozij.pdfIn PDF document text
    • https://turdv.ru/SITE/files/editor/file/74172845875.pdfIn PDF document text
    • https://artedeeducar.com.br/ckfinder/userfiles/files/84860532283.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614bc3896aa5d---gagululerixujadufix.pdfIn PDF document text
    • http://gasthaus-steinkirchen.de/img/editor/file/34289347356.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1616b789b17dee---1418152817.pdfIn PDF document text
    • http://yourhealthyanswer.com/ckfinder/userfiles/files/45977119679.pdfIn PDF document text
    • https://relans-nn.ru/images/docs/file/74704799827.pdfIn PDF document text
    • https://deverfgrossiercms.deindrukdemo.nl/upload/files/15457352031.pdfIn PDF document text
    • http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/2109151756440583482ae23h.pdfIn PDF document text
    • 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_off0000df64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF64 10852 bytes
SHA-256: 7e6c696e0e7b6d35aa8a667e8e8e02f61b653f66ace537219d7beab549b42e54
font_01_sfnt_off0000f871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF871 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11083 18580 bytes
SHA-256: 614eb589ac6f28032a7db7b14d7a8bd3179212d0018b22ad92f693ebc7f4e542