PDF malware analysis — malicious · 6c606ae5b8675aa4

MALICIOUS

PDF

81.0 KB Created: 2021-08-26 11:00:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 49c6b598ef635395f9f65eec230a0ff7 SHA-1: bc788b489fc6bde002bc39d5cee4e4ccf43e2d93 SHA-256: 6c606ae5b8675aa449d6072b933b93345f3e7052bdbbd4c580e8b316752328d9

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The heuristics indicate it functions as a link farm, pointing to numerous compromised websites and disposable hosting domains. These links likely serve as lures to trick users into downloading further malicious content or visiting phishing sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9975

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://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/5f409631761f5fbd4a91def8b0ffd40d/terofakuroduxevapujana.pdf In PDF document text
- https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b21bcaa7061---4634598646.pdfIn PDF document text
- http://paulbwatkinslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tipebopegowagosexi.pdfIn PDF document text
- https://tskrea.com/userfiles/file/ropufo.pdfIn PDF document text
- https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/qvrl6npc1jp9hnv133ep2h1tl0/8591021277.pdfIn PDF document text
- https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/16077e73d03538---todojesowelogojudavot.pdfIn PDF document text
- http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/07bc371e88dd4860e20906cc6c49cef0/61832688045.pdfIn PDF document text
- http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160b4258e29feb---73880359505.pdfIn PDF document text
- http://ekolojikweb.net/upld/userfiles/file/29911568173.pdfIn PDF document text
- https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/123f8f3e9575144ba4d4a7195c20d241/lorafizuja.pdfIn PDF document text
- https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/1mvv5a54lhrqequhc7qn1vh6g5/19497609110.pdfIn PDF document text
- http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609407a135ff3---banamikawuwejomigiza.pdfIn PDF document text
- https://suativisamsungtaihanoi.net/upload/files/47386234849.pdfIn PDF document text
- https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6d00f95fd4---zilefixemazuwezuz.pdfIn PDF document text
- https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160809f0910fd8---mofina.pdfIn PDF document text
- http://poddertradingandindustries.com/userfiles/file/pukapexazebuloxiwe.pdfIn PDF document text
- https://kipass.fr/userfiles/file/64587396085.pdfIn PDF document text
- http://schodylux.pl/userfiles/file/35288301497.pdfIn PDF document text
- https://aawyx.com/sites/default/imageuser/file/85903984612.pdfIn PDF document text
- https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/stsgpirf4bbvfu16b46mhg5cvu/fuzinoxadoxewebaw.pdfIn PDF document text
- http://synowka.pl/galeria/file/47101698450.pdfIn PDF document text
- https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/2i9bvrhgcpku2o6ej2q9qipdlh/zogumogapuxiw.pdfIn PDF document text
- http://naturallabs.de/userfiles/file/janifadosumesew.pdfIn PDF document text
- https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/v3b5nm77qoio1jklupe7kq94km/suwuju.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=install+motion+graphics+templatePDF link annotation
- http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e8d4f6a1b95---70997310929.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_off0000dbf8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDBF8	10772 bytes
SHA-256: `685691ebf2b7f67a376163f56cf52009f891bc70ae5c42e87c59ddaec56989e1`
`font_01_sfnt_off0000f48b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF48B	16060 bytes
SHA-256: `d99ee96087df64fc558a79997a2ad95c419378e183d672177c246506f3d059ba`
`font_02_sfnt_off00011e1b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11E1B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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