MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the presence of embedded URLs and the 'Fake invoice / payment lure' heuristic suggest the document is designed to trick users into clicking malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/485g929kghupcgj9bhg9ii5ou6/zixubijijopan.pdf
- http://alibabashipping.com/userfiles/file/zesitavipo.pdf
- http://laureysnv.be/uploads/files/202688254.pdf
- http://unicaconsultoriarh.com/images/files/rupugokiwobiw.pdf
- https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/ufdkoq8gh5u6hl0qtu7b2b3pu2/3905654596.pdf
- http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/nc7j5oqorqj8v1tcg2k5volvb7/71866469254.pdf
- https://salvatoredivilio.it/userfiles/file/63826856621.pdf
- http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607245d12cfbc---328745516.pdf
- https://rubyyadav.com/nbloom/fckuploads/file/94287319582.pdf
- http://vogiantinhmach.com/media/ftp/file/57348593953.pdf
- https://weborder.cloud/userfiles/file///19108932823.pdf
- https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/78hksguhteausj6t52a0hv1kfp/pobarisupawa.pdf
- http://taxiluzern.ch/khurasan/userfiles/files/93203043855.pdf
- http://urbanconstructions.org/images/uploadedimages/file/rubesaxafawis.pdf
- http://lempreintedubois.fr/userfiles/lempreintedubois.fr/file/57478570922.pdf
- http://kuzfarm.ru/images/file/81844980503.pdf
- https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/160a88001e7d01---88078488759.pdf
- https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/d035535ee02b9448cc2809be28005f9d/keziketogisidameluver.pdf
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16070150ece84b---84528816966.pdf
- http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610c2556daf2b---xodamoxe.pdf
- https://gloriouz.in/ckfinder/userfiles/files/zubekisonumuwujezafot.pdf
- http://www.nbc.com.vn/ckfinder/userfiles/files/79801863100.pdf
- https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/04b7d1a6eb1b881461ddfee35ac3987c/puxovudinarogoruzilu.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=how+to+calculate+maturity+date+accounting
- 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_off0000db9d.binaef0b31b3b44e109f529521642492080c379830a754c90ee509b626ff2c7ac5b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB9D | 17724 bytes |
font_01_sfnt_off000109ff.binc9c17c51f514916320bbe597ccf030bd984e2434c38bebaf2a1691b5003c7818 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109FF | 10836 bytes |
font_02_sfnt_off000122c5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122C5 | 16792 bytes |
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