Malicious PDF — malware analysis report

Static analysis result for SHA-256 e769b8d3d20191ba…

MALICIOUS

PDF

93.4 KB Created: 2021-06-29 09:55:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: f94e3cd74538450bd8b1c40c2f04b885 SHA-1: 71fa7a5cfe1a76dfed64128f9e4643cb70b3afad SHA-256: e769b8d3d20191baa593c3e6929a5928388ba065600a7f4176c5bdc7130bbd22
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with a malicious link farm designed to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crysiq.ru/uplcv?utm_term=current+affairs+gd+topics+with+answers PDF link annotation
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609834bceecb5---duvedepibomevefol.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/cc9feb929929ebed89a9a210a7436722/83765876327.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/22a8abf1e380cf55867e6b90f580c5ac/mavubawora.pdfIn PDF document text
    • http://delawaretravelmedicine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608995d63212a---gabutarefawagivo.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/n14tj3uqaho6bmqsed1i60gdh4/jigev.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6cafa62a04---22291403517.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/c4de063879b49233d0a05f70ab5e0709/82584479482.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/88c3180011e5449b9264e1e1b573f8e1/9472648235.pdfIn PDF document text
    • http://namuvaldymas.lt/userfiles/file/zaroperotu.pdfIn PDF document text
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/b4019e849111c6c061c3bf45ca58d39d/52924185414.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/bf99c6c921154320b2b248241f94a5c7/67557723353.pdfIn PDF document text
    • https://ntiverification.com/userfiles/file/51047342112.pdfIn PDF document text
    • http://lorofilmes.com/Uploads/ckfinder/userfiles/files/lovumadiruvivinamofowe.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085f87fa85b6---76390562372.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/afbdce1beea5dab50c3483875e0c1a90/puwadevijamesax.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160869f809b5a3---riragokewamoke.pdfIn PDF document text
    • http://mhspartan79.com/clients/9/97/97d0d0788ec4d6723ba7be3cd58769e3/File/pemuzezekinefog.pdfIn PDF document text
    • https://dollarplus98.com/images/upload/files/14700015654.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/d80a1726a14722797a591ce73f499a66/fadugorud.pdfIn PDF document text
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/27a9f2fac819471b6380b3d766acb726/lumexagoxofidizukefub.pdfIn PDF document text
    • http://asesorgubernamental.com/images/file/sozamiwigugexodumilidesas.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/tqab2lefao0tpfv65f84ro6c11/nosix.pdfIn PDF document text
    • http://handbook.hu/upload/page/file/fifusabotuvigo.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160754f8ec7081---45815397779.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bcf9c5ce7e---kusinofisu.pdfIn PDF document text
    • http://challendor.com/fckeditor/upload/file/37279704847.pdfIn PDF document text
    • http://bukvoznaika.ru/ckfinder/userfiles/files/14846927355.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_off000107a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011fb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB8 17780 bytes
SHA-256: c5f2336a4862f047153bde97e0be8d0dc60fb32b1ce1116f24cba71b68d0be9c
font_02_sfnt_off00014e6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E6A 11068 bytes
SHA-256: b6b0f302f78e36718720e354da506cf3ed02fce183ab006f1df371b2e766d432

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