PDF malware analysis — malicious · 740ef3c192d2c226

MALICIOUS

PDF

92.4 KB Created: 2021-07-04 01:59:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: a05b9423967d6875ee25cdb5e72023a9 SHA-1: 8238c3dd0d294303d01b831dc95341acda03427b SHA-256: 740ef3c192d2c2260da688720f60450f7b27abf26c564efd3d138e4dc7f929f0

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised websites and disposable hosting domains. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious content, potentially for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9924

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://inwebjor.ru/uplcv?utm_term=how+to+increase+abi+digimon+cyber+sleuth PDF link annotation
- http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ace1106947---nijezabagamuvezexunen.pdfIn PDF document text
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16094b8a7706a9---sexeselowiwukoxomazor.pdfIn PDF document text
- http://www.kilincsweb.hu/fileok/file/bewivo.pdfIn PDF document text
- https://semagro-msw.ru/pics/images/file/goduvadinonatapokob.pdfIn PDF document text
- https://dacinsara.ro/fckfiles/file/91821807595.pdfIn PDF document text
- https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/cib7i9h8gkd21pa27rlb1i5317/zimuxaloduwowibizoni.pdfIn PDF document text
- http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160962e8377536---7162885376.pdfIn PDF document text
- https://marljivo.hr/userfiles/file/7744344023.pdfIn PDF document text
- http://macro-e.com/app/webroot/userfiles/files/pejomovu.pdfIn PDF document text
- http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16082d0be16f84---82017887118.pdfIn PDF document text
- https://luminex.pl/upload/file/lodarorilubovajilifip.pdfIn PDF document text
- https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b80e6a7254---45858492836.pdfIn PDF document text
- https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/02c241a9f5615b1de1490be7852a258a/30179898218.pdfIn PDF document text
- https://q-web.ro/wp-content/plugins/super-forms/uploads/php/files/0qt08t39k357u9lf40jv680ni7/8889559365.pdfIn PDF document text
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/4499b069048673e9b09e3995ee7d777d/dezofepisa.pdfIn PDF document text
- http://grandinhr.eu/images/user/file/77199624201.pdfIn PDF document text
- http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606c95d77aa68---87295565757.pdfIn PDF document text
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080758a8add1---fegarovevokubabemu.pdfIn PDF document text
- https://gberwanda.com/gbe/useruploads/blogs/files/wixafeludimefowizu.pdfIn PDF document text
- http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8130cde77---60389079801.pdfIn PDF document text
- http://yangs-ns.com/ckfinder/userfiles/files/20210623105616.pdfIn PDF document text
- https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/b525bebc758c8b07321b0b9c7e92f000/xaxozenutobajaluwejujuk.pdfIn PDF document text
- https://detectiveoffice.net/userfiles/file/29414406779.pdfIn PDF document text
- https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a27d43b86d4---wojefepetibaxaguju.pdfIn PDF document text
- http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/2a2e2aabc293786b133c3fd40007c7ea/60484136554.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ed4f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED4F	5176 bytes
SHA-256: `df5b04cb7298c7015a9d6a93658a2a8660b84e2c2d2983d05f0c057aca4e51d3`
`font_01_sfnt_off0001004a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1004A	19296 bytes
SHA-256: `1da5f75d577ddcab508b2fefb76f11cb34bddbfa1700bfe2b1300eb7a712ec3e`
`font_02_sfnt_off0001315c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1315C	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_03_sfnt_off00014973.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14973	11248 bytes
SHA-256: `31fd3bbcf4b4692d78910d76f1bb132dbc1299bb6640793696a865be0ed364bd`

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