MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links pointing to various websites, many of which appear to be compromised CMS installations. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics indicate a pattern of using these sites to host or link to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious sites via a phishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
Heuristics 6
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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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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://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ad8de0bd5f1---detumevubiwig.pdf In PDF document text
- https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607abcdaf1b97---rexatujewojakekiwib.pdfIn PDF document text
- https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/9e378b628de1b56793a58dc9d99d38e0/netusuwari.pdfIn PDF document text
- http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/16086842b64589---98952137202.pdfIn PDF document text
- https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/l7kqg8n4i2d51aqr2kfak1sesm/8273327135.pdfIn PDF document text
- https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/bv477riqdu6osljnsraj9k77l4/7563766066.pdfIn PDF document text
- http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/160a155c295891---73283902803.pdfIn PDF document text
- http://3gr-group.com/ci/userfiles/files/15014020175.pdfIn PDF document text
- https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/oa8pjgs0jftbseiorcgg8midq0/98951076276.pdfIn PDF document text
- https://acryl-bg.com/userfiles/file/37186259266.pdfIn PDF document text
- http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c5df29b40c---zezubopinubanibonawik.pdfIn PDF document text
- http://hakkabrothers.com/userfiles/file///12202291882.pdfIn PDF document text
- https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/3l2j8sgp4qaeolnbuo52r6d5hn/vazodufulurirazukeb.pdfIn PDF document text
- http://stewartreunion2020.com/clients/2/2a/2a0d9dcdd57715375c9f4393c24df0f2/File/445328145.pdfIn PDF document text
- https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/3d26f019a2528327c55f37410e51f46d/33501180982.pdfIn PDF document text
- http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607248b73dba4---bogewumigamedupemusub.pdfIn PDF document text
- http://gesundimjob.at/images/content/files/penupi.pdfIn PDF document text
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160826fcf7ff00---52469917333.pdfIn PDF document text
- http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a0fb24ade4d---wevopebivemajoposemag.pdfIn PDF document text
- https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/332e360e6c690f92ec4a60a41aeb87c6/35914412866.pdfIn PDF document text
- http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079e3c0a8c85---jirovivuvegonobuxuf.pdfIn PDF document text
- https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/f9ebe2cec1c574782647e5f2af506a40/78511877836.pdfIn PDF document text
- http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/762243b06945dab58fee92eb805b8dc5/warofowazirunimo.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=marathon+training+plan+with+cyclingPDF 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_off0000f989.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF989 | 10548 bytes |
SHA-256: fb838997434f88118fc62c2bce41b6d4a4c175528030250afbb1c944b0aede3f |
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font_01_sfnt_off00011194.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11194 | 16600 bytes |
SHA-256: 7acef07f0b81c5dd391ee7ba506674a91b89972de86d295c899cbf83bbfdff1f |
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font_02_sfnt_off00013c6d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C6D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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