PDF malware analysis — malicious · 4993f187545aaf9f

MALICIOUS

PDF

75.3 KB Created: 2021-06-30 00:52:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: 8ac05c8d4fbbcc53e7ec677b0c3804a3 SHA-1: 24e6035084fb287937eedf57dd11189386e0a3b1 SHA-256: 4993f187545aaf9f405b0a0b1c599f644377a8b7d92605f3c0fd4f39ff9ff2ca

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by a machine learning classifier and ClamAV as malicious, indicating it likely contains an exploit. It functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious sites. The presence of external URIs and link farms strongly supports a phishing or redirection attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9947

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 http://italiangreyhound.pl/img1/userfiles/file/zoromanabonojefinol.pdf In PDF document text
- http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609177d0d1f13---liriroxunukelize.pdfIn PDF document text
- https://projetounificado.com/uploads/files/39259564396.pdfIn PDF document text
- http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/f62146d3cb902ee2505c287a1ef3747a/47948887037.pdfIn PDF document text
- http://ottotech.center/userfiles/file/gewidogodawapotuk.pdfIn PDF document text
- https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/5lob278nm2g3d547nujj5vlqp1/99695313468.pdfIn PDF document text
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c772e2f035d---gusufasugakewepig.pdfIn PDF document text
- https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/tq4mnce81v18j9rsqd565e6cas/lonituvaloserinanuxenuv.pdfIn PDF document text
- https://candbco.com/ckfinder/userfiles/files/lifipagenafa.pdfIn PDF document text
- https://btegypt.com/file/givoluvetoz.pdfIn PDF document text
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/f8d5c667679a1b662cbda52130b299f2/jinisivu.pdfIn PDF document text
- http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/160ad97b0a05ec---98083942352.pdfIn PDF document text
- https://www.analfissur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d523ff0999---gapokit.pdfIn PDF document text
- https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acc1cb070ba---purelupax.pdfIn PDF document text
- http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/9b24b1211ff8ffcad033097d964f3bff/34568745931.pdfIn PDF document text
- https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/bae7e79f43bdfd3bdcc15c1865e3f13c/51702334910.pdfIn PDF document text
- https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/81aa18325238a2b3eda637c9435f5d50/geditor.pdfIn PDF document text
- https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/08668caa383d8c1a98e549191ca4c152/kelijulapuravevisiw.pdfIn PDF document text
- http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f8b8948fb6---fixevimufozirajopalogewoz.pdfIn PDF document text
- http://zpb-maciejewski.pl/upload/fck/file/46265782704.pdfIn PDF document text
- https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/8e4u03dmd8frp16fgnqj3fh0v5/77152798295.pdfIn PDF document text
- https://bdsvieclam.com/upload/files/24371283981.pdfIn PDF document text
- http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16081c0eab2741---tifogukamere.pdfIn PDF document text
- http://www.aqsclimited.com/EditorImages/file/dasizovanelilobat.pdfIn PDF document text
- https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c2f4dd2606c---xawoxekazalevegezo.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=watch+beautiful+creatures+123moviesPDF 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c108.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC108	17028 bytes
SHA-256: `9d4c4d76b9d3c7a02f59ff66a9f4b7b09681e43f3b9686559e9dcde95c6ccf9e`
`font_01_sfnt_off0000ed6f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED6F	11140 bytes
SHA-256: `0394a09f87d85f67a0c2d14943ee494b30ce246c0028cf9bd738be0eb36b5ffa`
`font_02_sfnt_off000107a6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x107A6	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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