PDF malware analysis — malicious · a4eed42844e6874a

MALICIOUS

PDF

75.4 KB Created: 2021-07-07 02:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: 0c9b5d6f36b073e36595018d7cd3c093 SHA-1: 5db1397f9cd2cf9bdfec7177d39ce2e0b7ad7db4 SHA-256: a4eed42844e6874a5b4b823a8e7359b87ba7ea0f2d8d16d34cd98c06a918d3f2

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. The document contains a large number of embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall detection indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9840

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://catamma.ru/uplcv?utm_term=cast+of+santa+claus+is+comin+to+town PDF link annotation
- http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9bcf5b65e5---85222613121.pdfIn PDF document text
- http://ferramentabelleggia.it/public/file/80191337957.pdfIn PDF document text
- https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b9d78ac95c5---68365349937.pdfIn PDF document text
- https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/36967628344.pdfIn PDF document text
- http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a02b48f2853---18685214141.pdfIn PDF document text
- http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16083e3086a489---11122333556.pdfIn PDF document text
- http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a377a125a7f---23972175075.pdfIn PDF document text
- https://piataafacerilor.ro/app/webroot/files/userfiles/files/nawop.pdfIn PDF document text
- http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078cd99ee8f3---819232288.pdfIn PDF document text
- http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160784ca918d26---nogarekexemoguzogunok.pdfIn PDF document text
- https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/4c539780aa949e83c0a7a9600fe5380a/melexumiram.pdfIn PDF document text
- http://shinies.ru/img/lib/file/58461174304.pdfIn PDF document text
- https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/fcb4ecde975cd9737ac898079cc3c96b/lixuzupujapivud.pdfIn PDF document text
- https://securityguardsupply.com/php/uploads/file/30635443879.pdfIn PDF document text
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607a40964130a---20158089740.pdfIn PDF document text
- https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/657608f99f64d072546c7ac90fcc4ddd/4610737038.pdfIn PDF document text
- https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e003570f0e---pikirofilatamasow.pdfIn PDF document text
- http://goldenpeak.it/userfiles/files/53787070648.pdfIn PDF document text
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072affee6b11---51797917831.pdfIn PDF document text
- https://rivaflo-south.in/userfiles/files/japavurewudugafabawej.pdfIn PDF document text
- http://ghalemdi.com/userfiles/file/39066333265.pdfIn PDF document text
- https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/5d58eae3311238d6758a3b1b483bc6bd/lorupudizenisodofimujid.pdfIn PDF document text
- http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160886ee1c2e90---10007556589.pdfIn PDF document text
- http://www.thaiboat.net/image/upload/File/92420810166.pdfIn PDF document text
- https://craftsmancuttingdies.com/wp-content/plugins/super-forms/uploads/php/files/b6985da68488a527e24f691bc90ff565/lifikekin.pdfIn PDF document text
- http://seamcc.com/UserFiles/files/xokaxodeluremusifo.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_off0000c597.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC597	16364 bytes
SHA-256: `5496a20697e475056ba7c2eb483a2024d9b87bdbe56cc4027f158df87778a0ea`
`font_01_sfnt_off0000f031.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF031	10480 bytes
SHA-256: `9e35d0c70b1d0a034941bb6c851aa8c8190d3b47f6446feb30479031c34b220e`
`font_02_sfnt_off00010817.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10817	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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