MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal that the document functions as a link farm, directing users to multiple compromised WordPress sites and disposable domains, likely to facilitate the download of further malicious content. The presence of numerous external URIs and a link farm structure strongly suggests a phishing or social engineering attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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 http://wisserarm.nl/app/webroot/files/userfiles/files/91384585692.pdf
- https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca093711ef---purubeki.pdf
- http://shethof.ch/cgi-bin/dynamisch/file/birorirafamimewizogebuzo.pdf
- http://burfel.ru/upfiles/files/83062728125.pdf
- http://nfrostov.ru/upload/files/72273004090.pdf
- http://remont-elektro.eu/archiv/file/wuselopos.pdf
- http://127.0.0.1/kardelenemlak/upload/files/3758347207.pdf
- https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/13e0be0ee12d9a14d100cde532cd7438/xafivafagisare.pdf
- https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609409046d272---13881537195.pdf
- http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1606cee38d6ac2---36439589713.pdf
- http://gintaras.cz/userfiles/file/10717526943.pdf
- https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/0ibg5s0h4f8arffajgao5hpe7a/6491743389.pdf
- http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/160878a9a398c2---xinafukedur.pdf
- http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3f6646ed20---xiduja.pdf
- http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160705a7b2005f---rofulanatofuguno.pdf
- http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a684b7cff2e---63103354373.pdf
- http://icltindia.in/userfiles/file/zudetojiwolele.pdf
- https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/932b6338c5aead25b7826f8cc1888a80/71443436887.pdf
- http://solarhomepage.ch/fckeditor/editor/images/file/vejukafezevewe.pdf
- https://genericdiabeticteststrips.com/userfiles/files/poboz.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ab05a90317---xibefumiborederefazosin.pdf
- http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/16082031c66518---71065069922.pdf
- https://bechtoldpaving.com/wp-content/plugins/super-forms/uploads/php/files/b90319a08026500c8ee9f4ff0970a708/79528805128.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=epf+joint+declaration+form+pdf+download+2020
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e8ea.bin312705ae092b3447b240b7c7382990b95c55b0cba2aa1e51f6d4668c387ae307 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8EA | 16996 bytes |
font_01_sfnt_off000114f8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x114F8 | 16792 bytes |
font_02_sfnt_off00012d0f.bina80ad602c6f4f4bd229742bc4113c791e6b2d638206757506b7dab0b4b4ce772 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D0F | 11056 bytes |
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