MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a large number of external URIs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The primary attack pattern involves leveraging these links to distribute malware or conduct phishing attacks.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://cructi.ru/uplcv?utm_term=san+diego+national+parks
- http://quatanggiabao.com/images/uploads/files/38140340371.pdf
- https://lescourailleurs.com/upload/editor/file/93820496895.pdf
- http://thietbiotoviet.com/Images_upload/files/vapepudojomapanuluvi.pdf
- https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/5a0e0804884789572594f83ba915464f/51555472483.pdf
- https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/u5ruqu48igikflar0nmahu7g61/90648033096.pdf
- http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a2aed4e523d---datoxitifegaxovadagiseraz.pdf
- http://allycatering.com/userfiles/bupiwurebep.pdf
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609056033b3b5---44950367299.pdf
- https://bostaninsaat.com/image/files/diriwosogudodoxiju.pdf
- http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/16076f78a52d43---94732012467.pdf
- https://aneri12.cz/res/file/15591014190.pdf
- http://ruilong-ironwork.com/CKEdit/upload/files/43655545122.pdf
- http://adbuilder.at/ckfinder/userfiles/files/tasefebivefojidome.pdf
- http://ristoranteyuri2.com/userfiles/file/datidezelut.pdf
- https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1c353bbd6f92b5fb9c25497c85ee7333/78059886474.pdf
- http://imhkayseri.com/resimler/files/jojixerosajekimolifopevuf.pdf
- http://domholidays.com/userfiles/file/sojuguni.pdf
- http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/fb92e7250b69d41a7407b3ecbe8c4751/88250034447.pdf
- https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/dbaf55ce1f2e89e11a10c8b4653f94f2/forulivujesos.pdf
- http://georgewongdesign.com/gwd/upload/files/60162116669.pdf
- https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/neieefvj16vu223n6np4kbj8pu/40277690821.pdf
- http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/79674000c2d76ba248162e37bd21a78b/74944099664.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_off000100b1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100B1 | 16792 bytes |
font_01_sfnt_off000118c3.bin2cb6c5cb394576cffbf3b01a586ed8e6aa06f40d5558c357897fed63d9d183e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118C3 | 18248 bytes |
font_02_sfnt_off000148a5.bine0668583a6da244ef7fd0fed0a78a162cb94bdaf606dd8d75ad340465c0828ce |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x148A5 | 10736 bytes |
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