PDF malware analysis — malicious · 5efe206e77004be7

MALICIOUS

PDF

87.3 KB Created: 2021-07-17 11:58:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 6406cbbc70cb1284c43696b303bd2373 SHA-1: 54d5c070e631d0f34d87e4ec0b90a34c4af30cfb SHA-256: 5efe206e77004be72f77a874d69cfd7abf5d9f31034140ee1990c29a9e0966a2

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous URLs pointing to compromised CMS uploads and disposable hosting, likely serving as a distribution point for further malicious content. The primary attack pattern involves luring users through a compromised document to access these external resources.

Machine Learning

Nyx PDF Classifier malicious score 0.9835

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://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/acg7c2u9d8b3c2vb5c05e11tnn/botodedagi.pdf In PDF document text
- http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0b587deb82---laxuloponebuko.pdfIn PDF document text
- https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/4qacgqrb9tcnh8ejse74psq0g4/tavudifebirimumako.pdfIn PDF document text
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b41b5ddc4ac---61858343703.pdfIn PDF document text
- http://xn--80aaffebba2apgigwiiececnggk9e4k.xn--p1ai/pict/file/rejow.pdfIn PDF document text
- https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/e36e5bc2d32023cf2bc5f778b31b7b90/jolonibemapi.pdfIn PDF document text
- https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1609be6db9d6a7---towaz.pdfIn PDF document text
- http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8bae569178---baxakesifafugirinaz.pdfIn PDF document text
- https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/63qadubiihj38i4bk06l5jp8mg/zazupifuwugegaritunozej.pdfIn PDF document text
- http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094bcd28b7bf---54243916110.pdfIn PDF document text
- http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5f30b56748---12507870818.pdfIn PDF document text
- https://centrobrands.com/wp-content/plugins/super-forms/uploads/php/files/291631528f3a94d1aa5544af30ab25e1/jaxifa.pdfIn PDF document text
- https://investmentskillsgroup.com/images/userfiles/file/43528427182.pdfIn PDF document text
- http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160beaf48d923b---guwotagurimutur.pdfIn PDF document text
- http://gesundimjob.at/images/content/files/jukatarosegoruminez.pdfIn PDF document text
- http://gopherandsquirrelcontrol.com/admin/images/file/73473564613.pdfIn PDF document text
- http://puzynowska-kancelaria.com/userfiles/file/tusulasasujutodo.pdfIn PDF document text
- https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/22b211cc387486f924430c365faa5506/rezelu.pdfIn PDF document text
- https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/59b29f5d76b309873a46ea742dc9063d/25489928544.pdfIn PDF document text
- http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609cbd6a1e299---15865270057.pdfIn PDF document text
- https://grupo-kayros.com/userfiles/file/samefitawesad.pdfIn PDF document text
- https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/b9ceb05bad487b1583fa4061aff2622f/44316243644.pdfIn PDF document text
- http://geriatriccarenewjersey.com/userfiles/files/vivop.pdfIn PDF document text
- http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c19bb00a7f1---wadikowi.pdfIn PDF document text
- https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/248f54ffab1573babdc31ca6f41685cd/8359966866.pdfIn PDF document text
- http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160737c5448b76---26633113702.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=imo+books+for+class+6+free+downloadPDF 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_off0000ef81.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF81	17492 bytes
SHA-256: `c3a5d334af039d53a212d82b5dd23cb239913e775dab07e8bd7b83c8db7e587f`
`font_01_sfnt_off00011cba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11CBA	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000134d1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x134D1	10884 bytes
SHA-256: `91a45e3c585aca92fce1d88359d713cf146a8b6474f7f988a492804cd3392073`

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