PDF malware analysis — malicious · 060f3f2a0c5618ee

MALICIOUS

PDF

102.6 KB Created: 2021-07-07 17:34:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13

MD5: 13a150c5a7e38855ba0083fe096800e9 SHA-1: 5a1c6280187a835cb75ba9f71c0808f5d347ba5a SHA-256: 060f3f2a0c5618ee8fdf8326b48b4ba41f2d9660bca551a6e5317eac35310b12

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised WordPress upload locations and disposable hosting sites. The embedded URLs, such as http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a6a8f40cc47---xatatipagufuxoju.pdf, are likely used to distribute further malicious content or phish for credentials.

Machine Learning

Nyx PDF Classifier malicious score 0.9917

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://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/034619ae284ea1ffc42d2da3d8526cd8/22265898087.pdf In PDF document text
- https://avvocatoboretti.it/file/50401485715.pdfIn PDF document text
- http://lt101shop.com/userfiles/files/wexulatagofabibetega.pdfIn PDF document text
- https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/4bto701i1m34j3vsi4dl6rask7/dojudimixokotajami.pdfIn PDF document text
- https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/pp9ppruupde1up509a8n3vcvpl/33578045479.pdfIn PDF document text
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/a71dde4b4579ba01d32e09c97f944957/6969006680.pdfIn PDF document text
- http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a6a8f40cc47---xatatipagufuxoju.pdfIn PDF document text
- http://jmestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/83704338449.pdfIn PDF document text
- https://maydangson.com/vietkiendo/upload/file/15089919369.pdfIn PDF document text
- https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/8qc2h1nne2dpq31bno0gaa1fpe/bipapixepixuroda.pdfIn PDF document text
- http://flexa.cz/docs/file/gojebokusonobuvomozater.pdfIn PDF document text
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608b7e3019536---3592049105.pdfIn PDF document text
- http://nsdadventist.org/FCKData/file/54826409407.pdfIn PDF document text
- https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/ac2f574df8df3e120893ebe6a18641bd/78616824716.pdfIn PDF document text
- http://asianaccounting.com/admin/fckeditor/userfiles/file/repaxeb.pdfIn PDF document text
- http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/395c6552d971fc23dd898d1f4eb703e4/15545713176.pdfIn PDF document text
- https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/par8eo1jvgah1l2sscdc7pcgo7/jomabikimawexatagexowe.pdfIn PDF document text
- https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160a07caaeb61e---98971928065.pdfIn PDF document text
- https://tlproduct.com/userfiles/file/kewulugavugosetu.pdfIn PDF document text
- http://sangiorgioautoservizi.com/userfiles/files/vijanuwasebilobugotu.pdfIn PDF document text
- http://mdsalon.ru/img/lib/file/vulobixiliroxat.pdfIn PDF document text
- https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081546209678---levukap.pdfIn PDF document text
- https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a94e74a5661---mixupu.pdfIn PDF document text
- http://colescastle.com/clients/875019/File/xozubu.pdfIn PDF document text
- https://www.helmmsp.ca/wp-content/plugins/super-forms/uploads/php/files/bf43443f399891b602f8f05a7f65bfc6/rejofilopa.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=find+the+modePDF 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_off00012cb2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12CB2	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000144c4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x144C4	18984 bytes
SHA-256: `ee7c03a1cfc6f4642434d3e4349d0e2260c0dd2259a7b1a4908002706ef8513c`
`font_02_sfnt_off00017613.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x17613	10012 bytes
SHA-256: `c4204a63e5c93db68744b9518ccb33d9d3746d25d02b46876ab24011643252fa`

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