Malicious PDF — malware analysis report

Static analysis result for SHA-256 24d92870fe30b1f9…

MALICIOUS

PDF

82.6 KB Created: 2021-06-26 02:46:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 33bd4dad13c818bfb469f5f8d6183d12 SHA-1: 1fcd4b0f88078440ccc36a18ef348a8d480ca61c SHA-256: 24d92870fe30b1f9a9d22041dbfaae99187144a202c1c4f369f3f68e36099390
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to external websites, many of which are hosted on compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure suggests a link farm designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://medvor.ru/uplcv?utm_term=low+blood+pressure+during+pregnancy+third+trimester PDF link annotation
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/e4ce948bb4c1edbe887c0b302134becf/94773146067.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/5644e4fdafe3fe51998cebe2fd8b36f7/mulumuwoxotuvezetizeg.pdfIn PDF document text
    • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/14aek30bsut0mtit30e969e0i1/ginabuvusapum.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078d237e1c10---73384442846.pdfIn PDF document text
    • https://pensiuneavalentina.ro/app/webroot/file/36249105666.pdfIn PDF document text
    • https://www.carrentchiengmai.com/files/16859738719.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/e3072cc208543267f68a1404a5cd2bce/bogefuxabixidifadalomo.pdfIn PDF document text
    • http://rdmsrl.it/userfiles/files/zijodezuxefu.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/2af6e3ea9b857c601204a6d9414c15b2/futaf.pdfIn PDF document text
    • https://vatlieutaphu.com/upload/files/91620781460.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/609210f3bc938c99f6b128ac2b5f3431/duwubiwezowafunidinow.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/160976a2ec6381---43240596757.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d593f62038---bonimelumovulojojafarapaw.pdfIn PDF document text
    • http://security-m.jp/tool/images/file/718657407.pdfIn PDF document text
    • http://teraval.cz/res/file/rajawurepuvenarigomej.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/9n436p291ev1algc83t03lbkn3/fozisonezero.pdfIn PDF document text
    • https://eberli-medical-supply.ch/upload/file/87153785745.pdfIn PDF document text
    • http://smn68.com/clients/75339/File/1225689053.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/6f7bfc1aaafa22c00ab8de9f29d9d0ee/bawudiwene.pdfIn PDF document text
    • http://www.annaleehuber.com/content_files/file/68440311758.pdfIn PDF document text
    • http://lube-stc.com/ckfinder/userfiles/files/41117065447.pdfIn PDF document text
    • https://red-adlay.com/upload/files/masomap.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/0duf5j6d7lcluqvoh0jm6bqsu5/rewita.pdfIn PDF document text
    • https://medlineplus.gov/highbloodpressureinpregnancy.htmlIn 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_off0000e0d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D3 16184 bytes
SHA-256: fbc447af1454461094efdb540e725627d8dda409d832b618bf72f0ac444f7088
font_01_sfnt_off00010aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AAD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000122c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122C4 11360 bytes
SHA-256: 36eafb48e409c4fee8da8506986301c244b0e8ca78e171a890a0a4412199e1a1