Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b091bed2c3adfa8…

MALICIOUS

PDF

77.7 KB Created: 2021-07-12 23:55:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 4f94a070cd42f4350bf93a332f716d94 SHA-1: a3798c717dc28fd7819bda3a623eca8e7313c7aa SHA-256: 3b091bed2c3adfa8776dfe39f5e2218de7ac2df60afbf7302d96e0e7a02c0f5a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to compromised CMS upload directories and disposable hosting, indicating a link farm designed to redirect users. ML and ClamAV heuristics strongly classify this PDF as malicious, specifically as a phishing or trojan delivery mechanism. While no scripts were directly extracted, the nature of the embedded URLs suggests the PDF is intended to facilitate further malicious activity, such as downloading a second-stage payload or redirecting to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/ac7334e745efde12445d40980b468c23/58301720867.pdf In PDF document text
    • http://traiteur-ribot.fr/userfiles/file/71923276448.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160809c7e97575---malazapedokijasisuro.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/3049e1e5b14c10fb08e4244ef1da58f4/wafavojivujiwiduximabija.pdfIn PDF document text
    • http://filtrydokoparek.pl/img/all/kuzurarimazuso.pdfIn PDF document text
    • http://edanieltour.com/FileData/ckfinder/files/20210528_44D7EC42E4DF5889.pdfIn PDF document text
    • http://auto-spec.ca/fck/file/99973616309.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608618f933894---93006467162.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c168ee2fb1a---87193634182.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/bada36734e78e4415ae6af292a6be90e/bedalawarisotil.pdfIn PDF document text
    • https://next-engineering.com/userfiles/files/foluv.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609074b18cca4---voliw.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1607915ebec224---mekivafovol.pdfIn PDF document text
    • http://activesolutionelectric.com/images/file/67496001774.pdfIn PDF document text
    • http://weorderfood.com/uploads/files/77257648619.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c85ded401---dazexirovanugu.pdfIn PDF document text
    • https://nepalonetours.com/userfiles/files/luvagexejinajupiz.pdfIn PDF document text
    • http://florylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dogefusarelem.pdfIn PDF document text
    • http://agendatourvietnam.com/hinhanh/file/mudiponirorebopib.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/5a859ae4da602016298d4cf4cbf0b70c/65063710338.pdfIn PDF document text
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/2cff217cd5939629f72cd0ff7997481c/susupuviwixegafuloxevowel.pdfIn PDF document text
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/93969379f4482a681ea312e282a6533b/sedukiwunudusibes.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/gasolakedavapesanezi.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/s68rhke2futrk3r85fun5f1jnr/91012753572.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=literal+constant+in+c%2B%2BPDF 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_off0000cd61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD61 10180 bytes
SHA-256: 96d027b69f856edd4c332b1e6ca46ca023042e6f2e11b956514e992bc7454aaf
font_01_sfnt_off0000e449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE449 17208 bytes
SHA-256: e4c0c177500200a6831291edaeaec4d658392c2f888eb7bc26df7d420ea219a7
font_02_sfnt_off00011160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11160 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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