PDF malware analysis — malicious · 0525b5bb13c75f1e

MALICIOUS

PDF

90.2 KB Created: 2021-06-27 00:17:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: 9a48878a9a36cb98938c38ca439adfcc SHA-1: 7ced6176b2c1588bc794f4ec7420534a96a3d457 SHA-256: 0525b5bb13c75f1e574ed116b221a32bd7184260341c8e730a82de65e02efaa1

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm used for distributing malicious content. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification further supports its malicious nature. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and URL analysis indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9835

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://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/bf45b941349332a15286521fc5821af7/31722123777.pdf In PDF document text
- http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160983f4b19c56---53706431455.pdfIn PDF document text
- https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081298ae2d28---gixorajujosiwune.pdfIn PDF document text
- http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16087514882c8f---27369682900.pdfIn PDF document text
- http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091177796d5a---7547698376.pdfIn PDF document text
- http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160a17d02272c9---14366213478.pdfIn PDF document text
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607edb963b7ab---99783449184.pdfIn PDF document text
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9eead011a1---28084126952.pdfIn PDF document text
- https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/64bebe72ed16380c479fb1c38f92efff/49114467473.pdfIn PDF document text
- https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4560ae1644---84667004209.pdfIn PDF document text
- http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16075e93c36d7c---2135258981.pdfIn PDF document text
- https://agrilaui.com/userfiles/file/64249348076.pdfIn PDF document text
- http://sllight.ru/design/img/upload/file/15133379886.pdfIn PDF document text
- http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a7522904f32---12276346808.pdfIn PDF document text
- http://purpledoorchurch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2706e5d79---berunuxeniliweve.pdfIn PDF document text
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/c6d491fa29f1cb16a10e07f1de1f9d99/xilasoni.pdfIn PDF document text
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd768edaf1---93138421240.pdfIn PDF document text
- https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c91a11b15b---gosunidifisobigu.pdfIn PDF document text
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609271896249f---922458569.pdfIn PDF document text
- http://gulfcoolcontracting.com/uploads/userfiles/file/file/14459728693.pdfIn PDF document text
- http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086e378483f0---31292764493.pdfIn PDF document text
- https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/1470ee85fd05ea63d7cc76b5b568d448/jaxikegegiwed.pdfIn PDF document text
- https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/df5474677fa00219416c3152b6c8042f/mepudakuvunexe.pdfIn PDF document text
- http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072b710ddaa6---99877883613.pdfIn PDF document text
- https://myphi.biz/nbloom/fckuploads/file/34521774418.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160967ae019ba6---6657354895.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=download+the+latest+version+of+vidmatePDF 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_off0000fc89.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFC89	17448 bytes
SHA-256: `177d2cc8b2aa6a95829282192cdbe39cb16bc539ae3d8a496da685d28200173d`
`font_01_sfnt_off00012a53.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12A53	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0001426a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1426A	10772 bytes
SHA-256: `152b5f103e5d3fb8b392fb49d1595722246475fb900bd210ae2524207b940aab`

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