PDF malware analysis — malicious · 11acdefa30ac7074

MALICIOUS

PDF

88.4 KB Created: 2021-07-05 18:56:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: 9401cf8a6f2a15d4c6166b519594a7ee SHA-1: 889194ffbd4577641756355f04a9b6682eea9594 SHA-256: 11acdefa30ac7074e0721a05ba58f13f1a254656c76c3b228a897fe1d9ecca11

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious content or phishing sites. The presence of external URIs and a link farm structure supports this attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9947

Heuristics 7

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://irinaburmistrova.ru/files/17717918584.pdf In PDF document text
- https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/7de13618a119a3966e0b643abbc39aff/nasijukeradujuxijote.pdfIn PDF document text
- https://wfca-czech.cz/temp/userfiles/files/44500423376.pdfIn PDF document text
- http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16098ad3dd25da---3814796789.pdfIn PDF document text
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/c641e09087b25e392ea4522b35e4473b/goronebesovefafeforute.pdfIn PDF document text
- http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608b885dc9619---74683315717.pdfIn PDF document text
- https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/ccbc40eedcfea1da5330f15bc5bbcb1a/guvur.pdfIn PDF document text
- http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608791f061f4a---ligumirepefit.pdfIn PDF document text
- https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ac6b4f0284f---55986688914.pdfIn PDF document text
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/r8f8krbgui742276hue6tdpeq6/kogotodow.pdfIn PDF document text
- http://tulsamemorialclassof71.com/clients/84987/File/gixudipujilipepisizapuf.pdfIn PDF document text
- https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/cd14e4f5ad2956901981d0b0c9de2d2d/18714988993.pdfIn PDF document text
- http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/16071a445a8589---zeduvuwivivagisedivagaxed.pdfIn PDF document text
- http://iaestedresden.de/userfiles/file/29161319611.pdfIn PDF document text
- https://tyko.pl/userfiles/file/19689937147.pdfIn PDF document text
- http://drapikowski.pl/uploaded/fck_files/file/38542173967.pdfIn PDF document text
- http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d07316ef40e---74673038346.pdfIn PDF document text
- https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/4eb3bno5bfi07ve4l7ovcst1av/2421723361.pdfIn PDF document text
- https://hkparkkonutlari.com/image/files/fimutafibibibami.pdfIn PDF document text
- https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/2a41e55ddcfbd13fc27d5dbbe6bf3e38/fajisijedevonol.pdfIn PDF document text
- https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606faa9dcb92c---firukosavaxugolexaworize.pdfIn PDF document text
- https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/16091f3ebc54c7---30389627094.pdfIn PDF document text
- http://tanriovermensucat.com/uploads/genel/files/1039175529.pdfIn PDF document text
- https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/9aae2005ae38ed32144bb6074f723537/42328824936.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=molecular+biology+of+the+cell+downloadPDF 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_off0000f49f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF49F	17208 bytes
SHA-256: `d916be3ec180031edd52e54d6d31c00fca9b9d7c0e748d115569a0f9dd1a205a`
`font_01_sfnt_off000120e6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x120E6	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000138fd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x138FD	11020 bytes
SHA-256: `88288e24749e9547ac1166f49052cbeaa90e4cad00aa4bf1bde99c45c5dccff0`

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