PDF malware analysis — malicious · f9c25a11edfe317d

MALICIOUS

PDF

93.8 KB Created: 2021-08-08 22:05:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24

MD5: b539ca02a8fb65ea00888c3d321301ac SHA-1: 71fb90b3edc491ff7593f80f434ffb2565f8fa1e SHA-256: f9c25a11edfe317d08c6d08d7a5563d0f4b37292b1754f3f97eca730e7e8f155

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or malware distribution lure. It functions as a link farm, with many embedded URLs pointing to potentially compromised websites or disposable hosting, designed to redirect users to malicious content. The presence of PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristic suggests these links may lead to further malicious files hosted on compromised content management systems.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

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://apsons.eu/files/file/godevenataxefez.pdf In PDF document text
- https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160f9d707ed765---78885475900.pdfIn PDF document text
- http://cnhhgj.com/upfiles/userfiles/file/zutusiladuzurunilufapu.pdfIn PDF document text
- https://floridainvestment.cz/files/file/timulurijodivuje.pdfIn PDF document text
- http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a451d7f306e---39649426884.pdfIn PDF document text
- https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2a10cdb593---7644186922.pdfIn PDF document text
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab13fe18d13.pdfIn PDF document text
- https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/4fd71a9204bd2a001f944255ae7d9088/lexelekizivogax.pdfIn PDF document text
- http://gowowdeli.com/uploads/files/bowedufagosizotinatomini.pdfIn PDF document text
- https://eletvital.hu/uploads/files/puzav.pdfIn PDF document text
- https://sweetburden.com/upload/users/files/narogetazore.pdfIn PDF document text
- https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/8da7df5571e50f1f672066c7f9b786c9/18565701124.pdfIn PDF document text
- https://capital-tic.com/upload/ckfinder_temp/files/20210527220054.pdfIn PDF document text
- http://architettipassarinmarzotto.com/userfiles/files/4799177854.pdfIn PDF document text
- http://purofirstli.net/userfiles/file/7190440683.pdfIn PDF document text
- https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/bq7tkf757kdf7e65k3mcq7upk2/dosexoroda.pdfIn PDF document text
- https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160c0ef8b5801a---pimaxetarav.pdfIn PDF document text
- http://kolasinprevoz.rs/slike/files/xebun.pdfIn PDF document text
- https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1f04a7617a---85578595880.pdfIn PDF document text
- http://eros-arena.de/eros/userfiles/file/monivowusevexiropopo.pdfIn PDF document text
- https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/9a18f8a107e12afb48b84ed06b4ae5ae/84451111237.pdfIn PDF document text
- https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/a498839fe1771a57e490ec564bbe4165/53537619248.pdfIn PDF document text
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160846c4b69bd1---42854134705.pdfIn PDF document text
- http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160ad054eef70e---11513625505.pdfIn PDF document text
- http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16076570bf1fb3---bilezo.pdfIn PDF document text
- https://magerp.org/upload/files/jufepogilulide.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=no+sonrias+que+me+enamoro+pelicula+completa+en+espa%C3%B1olPDF 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_off00010792.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10792	17808 bytes
SHA-256: `35c4f1524e7d899f10a057fb9357e2a8eae782df885c795b0f10afd8d3ef45bd`
`font_01_sfnt_off000134d1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x134D1	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00014ce8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14CE8	10964 bytes
SHA-256: `508f993eb6b1b30889a80a1c7d87c604da3c67b073b0ca2ea2f502c77d04e770`

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