Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f9f51e493a60218…

MALICIOUS

PDF

90.1 KB Created: 2021-06-25 12:41:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 430747ba5ae76a3420f2fbc6743690f5 SHA-1: b1c46818c8eda1b87f0a97f31260795f17746bbb SHA-256: 1f9f51e493a6021858d454cbc53d98a25ef773cc19063ef87ba675077fed6f9d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://chcial.ru/uplcv?utm_term=health+and+safety+in+plastic+industry+pdf PDF link annotation
    • http://conomiya.com/images/uploadedimages/file/wasezogipolexotoleb.pdfIn PDF document text
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/cae20a8642161646b6f4db87ef1ee169/3095920562.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/m0tcnvb4buvdkpsin21t0noed7/dejikawo.pdfIn PDF document text
    • http://wsp.pl/userfiles/file/mopenepelup.pdfIn PDF document text
    • http://youngshiny.com/userfiles/file/1622977868.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608b762075ba4---35336468785.pdfIn PDF document text
    • http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a188ee1679f---92377032409.pdfIn PDF document text
    • http://eska-lift.ru/userfiles/file/luwelow.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/216558t49an3ldogs6g0o99bc2/guvijexik.pdfIn PDF document text
    • http://bagiez.com/userfiles/file/jiborafinadimajiwimom.pdfIn PDF document text
    • https://sinhadventure.com/uploads/file/muvafom.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/i22u7n28403d1aebo4dkg4iol3/naluj.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-5-25/20210525185120283619.pdfIn PDF document text
    • https://lawina-radom.pl/files/file/67740006975.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16077cc43887a8---43636020826.pdfIn PDF document text
    • http://pusancard.com/userData/board/file/57367981652.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_off0000fcfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFA 16896 bytes
SHA-256: f8cb469ecca0a00d221ca8a9b13e8e2c5ee4ceb1301e73c3ce11194fbe787bae
font_01_sfnt_off000128d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128D0 10804 bytes
SHA-256: ad41db87509b67b888aac8f705098e673db010c2c2c76fca08bbbef7d5638cf0
font_02_sfnt_off0001419c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1419C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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