MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF was flagged by multiple heuristics and ClamAV as malicious, indicating it likely exploits a vulnerability or attempts to trick the user. The presence of numerous external URIs, many pointing to compromised WordPress uploads or disposable hosting, suggests a link farm designed to redirect users to malicious sites. The ML classifier's high score further supports the malicious nature of this document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9881
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://crysiq.ru/uplcv?utm_term=move+to+ios+not+working+oneplus+7+release
- http://www.advokat.com/app/webroot/img/fck/file/97065877603.pdf
- http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160beb0d93f4b6---26361098131.pdf
- https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/0fddlr8rifh86hhka9o9efus6a/69920224090.pdf
- http://imi.vc/upload/files/fipiluvudijepopedetetusup.pdf
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160a38d370439e---30963348786.pdf
- http://www.biotanika.pl/upload/file/2773021428.pdf
- https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a9dd0c7f40f---lerijikuwaxanavozotanu.pdf
- https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/528d86c87224bc26a5176d43406fd6d1/juxotojaxuriwetux.pdf
- http://naitikfashions.com/ckfinder/userfiles/files/26287384229.pdf
- http://interiorconsignments.com/media/file/nazigafewikunilawunafoja.pdf
- https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/c48b72ef7aff99a51b4f8d665f9387cd/matisojekujejizironetamuv.pdf
- https://nnt52.ru/userfiles/file/xurenidakatifazatuzowidig.pdf
- http://1mosref.ru/ckfinder/userfiles/files/kimiruvasuratixerawovu.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1bba8db32e---wekalojazimerafezufigeges.pdf
- http://aep-tc.com/cache/fck_files/file/43340643776.pdf
- https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d77fc1e57b---negidu.pdf
- https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/cfi4s142j553vhepcp21cf0rvv/junewinifewegaratumuzipov.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083c4336b769---ropijanunerok.pdf
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160e3afa62dcd7---mufezemogirobalor.pdf
- https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/e587c723366ecbfddde3f6f1eb55459f/lowomosumudaturutu.pdf
- http://robinsonsmithreunion.com/clients/879094/File/18205077886.pdf
- http://uforoi.com/app/webroot/uploads/files/53117866897.pdf
- http://porpora.biz/imagenes/imagenes_contenidos///21523120099.pdf
- http://biplano.eu/userfiles/files/lupimawepojibeligapuxali.pdf
- https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607e78e758386---xibafetavomifepirukodakeg.pdf
- http://ckrestaurantgroup.com/ckfinder/userfiles/files/24611976599.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_off000121b1.bin3c2e2a17658bc896940d86462bd1fa3ea2eefd0ffa8021772f602f973d49fd3c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121B1 | 10812 bytes |
font_01_sfnt_off00013aef.bine911a709d12b0010455a0a5838a5ccd579998eb97b2f83b88b03911b7bb22d9d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13AEF | 17372 bytes |
font_02_sfnt_off0001687b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1687B | 16792 bytes |
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