PDF malware analysis — malicious · 34e0da1958696b2a

MALICIOUS

PDF

78.1 KB Created: 2021-09-04 07:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: c2b50d28aa893a9b2c35f26a89166457 SHA-1: ac2fd9a6d8dd31524058d500df9a08c1925d1104 SHA-256: 34e0da1958696b2ae0a4ebeaa3cd43caee01b8383a8274079aa5dc1df48cddce

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a link farm with numerous URLs pointing to compromised WordPress sites and disposable hosting, likely serving as a redirector to malicious content. The presence of external URIs and the nature of the link farm suggest an attempt to lure users to malicious sites, potentially for credential harvesting or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.7431

Heuristics 5

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
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://garglob.ru/uplcv?utm_term=soda+pdf+editor+free+download+full+version PDF link annotation
- http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d0c371e31---kowirokepepekuranejotowe.pdfIn PDF document text
- https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/4647a989c5400a4a4de552d3aeb2a24b/rukab.pdfIn PDF document text
- https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8025049227---32935175319.pdfIn PDF document text
- http://thelonerangerfanclub.com/ckfinder/userfiles/files/paked.pdfIn PDF document text
- http://www.pattyn360.com/upload/forum/files/63731781650.pdfIn PDF document text
- http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd1bdb67bf4---4028843070.pdfIn PDF document text
- http://spartaksedlec.cz/spartaksedlec/userfiles/file/rezoxasomovibelolojuz.pdfIn PDF document text
- http://theofficefurniturestore.com/ckfinder/userfiles/files/51987973031.pdfIn PDF document text
- http://csc028.com/userfiles/file/20210813054131_drclfg.pdfIn PDF document text
- http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bdd5da1aa80---41048319228.pdfIn PDF document text
- http://aircond.md/upload_fck/file/13045088627.pdfIn PDF document text
- https://chptravel.ir/data/file/selatapoda.pdfIn PDF document text
- https://maintogelonline.info/contents/files/62326128678.pdfIn PDF document text
- https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/14f2f298c51e6de1c8a446f01dcaebc7/18540720439.pdfIn PDF document text
- http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085eaaaec3ab---poviripada.pdfIn PDF document text
- http://cl-metalparts.com/d/files/39282199342.pdfIn PDF document text
- http://mevlanaasm.com/resimler/files/99973908724.pdfIn PDF document text
- http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b37f78b92f---34627846328.pdfIn PDF document text
- http://hopkinshigh1988.com/clients/75739/File/jizuworazagabuw.pdfIn PDF document text
- http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/6ac827db7be6115fc205c31fae14680f/pogepudoneliximodes.pdfIn PDF document text
- http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/04b6b1808c26260742cab607281c6550/78308027156.pdfIn PDF document text
- https://ostrichpharmaceuticals.com/userfiles/file/gajobadidezorekimana.pdfIn PDF document text
- http://ilovegabal.net/fckeditor/_upload/file/12850542329.pdfIn PDF document text
- https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/6479cc456079cc1071fc75efccc08eec/mogigasilijoxawitobadix.pdfIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e34a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE34A	17564 bytes
SHA-256: `857602d4c26f4020e2dc90b2484fe56d072aafa8372ed19308776e58f83945cc`
`font_01_sfnt_off000110ee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x110EE	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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