MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to compromised WordPress upload storage and other disposable hosting sites. The presence of numerous unknown URLs suggests a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
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://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/je9tva502mfq6k3ie4vaigtk0e/fokewududonaf.pdf
- https://www.analfissur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608475a0e8dce---lifunomejajol.pdf
- http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/c72fe0b61f06e6ed9ae8725fc4391df3/64467672717.pdf
- https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/91267669c0ba533e8dfa80a5818af288/goruberefimikulof.pdf
- https://ienter.bg/files/91728944780.pdf
- https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608765273e91e---91091405823.pdf
- http://asja-doll.ru/userfiles/file/damidemepumopogifa.pdf
- https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/62edeb779ee643fa74a82a833ef7ecef/zeritavon.pdf
- http://stjconsulting.it/userfiles/files/7168561776.pdf
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4cf13d9e5bef87ca80b7f6c1c0c8aeb5/nimitudojun.pdf
- http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a8031987876---35713811013.pdf
- http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ee5487dbce---93231697065.pdf
- https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/bcd3a4ba9ba7be0a7a415d228485eb0d/vekalogudasujukoged.pdf
- http://glina-master.ru/admin/ckfinder/userfiles/files/bekejiwojejosabu.pdf
- http://piqiso.ru/userfiles/file/woxafugivimusezi.pdf
- https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc8d42dd08---868932057.pdf
- http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a56a03ceafd---18447799353.pdf
- http://yousefmaktabi.com/ckfinder/userfiles/files/21133847021.pdf
- http://bezagsecurity.cz/userfiles/60365321334.pdf
- http://altelaw.com/uploads/image/file/55478626149.pdf
- https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/9416c10e1bb1ac7743564ac14697823f/ponisarujomisipiduzakawug.pdf
- https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/a91f2ac8fc47bf50e1875567c87a2f7b/bikejagekurufesotewap.pdf
- http://eksan-ltd.com/userfiles/file/redaf.pdf
- http://www.contectrade.hu/fckfiles/file/59244507109.pdf
- http://galluccifaibano.com/userfiles/file/36846015845.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=use+of+nahco3
- 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_off0000d7da.bin9aef3d61f5c4f391765687cd5fcbdca3e75b9f92e2f1e5900b681d29ad2cb41d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7DA | 10276 bytes |
font_01_sfnt_off0000eefd.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEFD | 16792 bytes |
font_02_sfnt_off0001070f.bin667cd1e50b1c70e863b40290095d9c7e2b43117f81f746944d7c3c8e036a3860 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1070F | 18336 bytes |
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