PDF malware analysis — malicious · ebcb2af2b2f66a09

MALICIOUS

PDF

86.6 KB Created: 2021-06-27 16:07:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: 52b90a164b701926b566242fb6bde2b2 SHA-1: 32ad196f0aed89c98da7a56d84741b20230f73f7 SHA-256: ebcb2af2b2f66a097644ae1c8e5636b7c5eae93f417a6e7ae8c5ac62cf87e3a6

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous links pointing to compromised WordPress upload directories and other disposable hosting, suggesting a phishing or malware distribution campaign. The presence of external URIs and link farms indicates an attempt to redirect the user to malicious content.

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 https://ketchas.ru/uplcv?utm_term=stomach+and+bad+breath PDF link annotation
- http://ackerviewguesthouse.com/userfiles/file/12407108332.pdfIn PDF document text
- https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16079dfd268d9e---rujenib.pdfIn PDF document text
- https://moscowfashion.net/content/xuploadimages/file/65962740982.pdfIn PDF document text
- http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16097732ce2372---18798821381.pdfIn PDF document text
- https://fotofidelity.cz/userfiles/file/fuwixalepoxagewizenafadup.pdfIn PDF document text
- http://visit-pune.com/userfiles/file/lopuv.pdfIn PDF document text
- http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c28fcf6f7aa---54533205837.pdfIn PDF document text
- http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160984adc2e970---21194470638.pdfIn PDF document text
- https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/ono17vu2gb459jok3p81gqrikg/99987724935.pdfIn PDF document text
- https://bojovicsirogojno.com//files/nawurusawepuwipuvedi.pdfIn PDF document text
- http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608b946cb5609---mokositalafusalinifekivo.pdfIn PDF document text
- http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/bd71add3ad1a78f07270f49c619a6095/11230079864.pdfIn PDF document text
- http://bdn10.cz/files/file/43345491851.pdfIn PDF document text
- https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/ivfk74ff1ickki2r9eeubk2ab3/30650128326.pdfIn PDF document text
- http://www.malagatour.es/ckfinder/userfiles/files/9984123445.pdfIn PDF document text
- https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082d31f07fd0---96026762641.pdfIn PDF document text
- http://monkey-do.net/userfiles/file/goxajasonubor.pdfIn PDF document text
- https://fanaf.com/article_ressources/file/19561694142.pdfIn PDF document text
- https://actorconseil.com/files/file/xuzopor.pdfIn PDF document text
- https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/61fb43d888629de36947fe6370bb35fe/nopow.pdfIn PDF document text
- https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/59f19073a3884112aee7e44fa391ff75/75756515938.pdfIn PDF document text
- http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16093b7a472197---fagitigemesosej.pdfIn PDF document text
- http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/e6df330680f8e0db10876057585fb402/kobijenofobelused.pdfIn PDF document text
- https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/h06bqfe9ntgonr6rpjcgl979ag/19420863218.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f100.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF100	10544 bytes
SHA-256: `2b788be7107241322555e074459bd723a65b6904a9c51a4a2232a9ac0a4f8538`
`font_01_sfnt_off000108dc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x108DC	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000120ee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x120EE	17240 bytes
SHA-256: `b25b2eed8a68e6602b4846aa5e6c91d7a73b22a8688ddb82229d2472cdbacca0`

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