MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous embedded URLs, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The primary attack pattern involves luring users to external sites, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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 https://irlanc.ru/uplcv?utm_term=vietnam+airlines+ho+chi+minh+office
- https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/ph37mdfm34f6pgs6nrnq7oqs4b/xuwijawudeleberiwosesoda.pdf
- https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607f71d7afb28---juvipemuniwog.pdf
- http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/0e36e97ja0iq1g7r8lc4575h11/86089001530.pdf
- https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/r3fff2j23070cchh2b67dbj7ac/pigutuxixesumogexipa.pdf
- http://50wj66.com/clients/a/af/af9d65f11c1965a5434adcd4cd578f00/File/fekagupobozojasobavago.pdf
- https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5c4db5275b---63669553687.pdf
- http://dnepropress.net/files/file/95292681258.pdf
- https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/naei9snkdelu8ikmvdre58b142/93308629367.pdf
- https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/vvot1ffddkuolfuig6mrhsaqsv/sokud.pdf
- http://myucmas.com/userfiles/file/lixevawukomeluluxunidaru.pdf
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078a6678c0f2---57081573736.pdf
- http://cnkls.com/userfiles/file/1623417228.pdf
- https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/c36cb639a641ba444bf4c2774065440a/rijetofulapabusigus.pdf
- http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607322a323b03---49165007497.pdf
- https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a7dcfbe2398---wuberi.pdf
- http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070d6bf4e596---gelilufoxi.pdf
- http://geometramaurotozzi.it/userfiles/files/7035291960.pdf
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c673623b86e---ludojivabokavu.pdf
- http://ahxxzx.com/userfiles/202105/file/wolunimifuviwulabawoxa.pdf
- https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/bfcb83c118db3a3040cf2a1f8670f94d/suvajidakizobalami.pdf
- https://akapacha.com/userfiles/file/96603790794.pdf
- http://seoulsquare.com/userfiles/file/nopupatetakup.pdf
- http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d5aaca9e580---virutix.pdf
- https://agenciaboom.com/wp-content/plugins/super-forms/uploads/php/files/ed8qk8tgek7mb1b7na320p06e7/74154169690.pdf
- https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/8iqq8ms79ipjhocepspqb8umgt/73522246459.pdf
- 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_off0000f661.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF661 | 16792 bytes |
font_01_sfnt_off00010e78.binfa5fe43f99e7a4ae14b7fe67042e57d107072ef351419cb8a721af5aad6a3dbd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E78 | 10572 bytes |
font_02_sfnt_off00012661.binae717e2e2ea66f4094c6956364a15438f9dc9c780c11fc023f42c5eb6f65cb12 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12661 | 29236 bytes |
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