MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan distribution attempt. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the overall structure strongly suggest this document is part of a phishing campaign, likely using a spearphishing attachment as the initial access vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://chcial.ru/uplcv?utm_term=meniscus+tear+cortisone+injection
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/dbac1d2282654014a0a04e2b0d8ab362/52428985211.pdf
- http://scro.ru/pic/file/nefagefu.pdf
- https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/adde9a81d8971c8f16d4c43645dd6f34/kofuvulusagiko.pdf
- http://bestapp4u.com/admin/uploadedfiles/file/69260594318.pdf
- https://memoservicesrl.it/file/tibilarapugu.pdf
- http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160d1dcd8439e3---61130279532.pdf
- https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/5d8da3ad5ecc5bfa88fcabd3d02281dc/7198210830.pdf
- https://talaa-obour.com/webmisr/uploadwebmisr/file/95316873693.pdf
- https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a796eb04a1e---vewejipejal.pdf
- https://myphi.biz/nbloom/fckuploads/file/10525573535.pdf
- https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/2b1ae4b87f14ca0773c2764e7023f8e7/molibafisofexepaborabonap.pdf
- https://narimasu-chintai.net/jcfiles/file/bifufamiga.pdf
- https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/e97d1e0fe7b605a302a214c3bf7f5104/zodab.pdf
- https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/2d17462dbf0579e0870f214a3e0d15b6/xigumelinuxumove.pdf
- http://ctyrkolky-gamax.cz/data/dokumenty/54115087684.pdf
- https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3b0e8ba87---xevevevibumoj.pdf
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/is0gro90blsjbrir9kjo7teb41/jatemovifexakisazox.pdf
- https://metnar.pl/web/uploads/files/67774124830.pdf
- https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/153d327910a57646db24eba1f789f7d8/3444795843.pdf
- https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/vgu3bbsq6plsdppa1drl8dm2r4/13057112728.pdf
- http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070267623dce---jodugowirogodalobisagipo.pdf
- http://brette-animation.com/userfiles/file/80588544876.pdf
- http://fabriziocar.it/userfiles/files/23969875476.pdf
- https://sieompaysdebray.fr/lesiom/txt/imgadmin/file/bizipawuwumowafe.pdf
- https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/079cb083162980834da8e18ebd3ff5b5/mabetinokeli.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_off0000f1f1.bind3edf44397b3cb0d886c5cfa665a56f5986b289017b3a4cc97d081b6acc834c1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1F1 | 16356 bytes |
font_01_sfnt_off00011c6e.binfa7d36510b7561861b5a978cfb9d064586520fe98e5f33cfbbdfed643d7b1a1c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C6E | 10400 bytes |
font_02_sfnt_off0001341d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1341D | 16792 bytes |
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