MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
The PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to compromised WordPress upload storage, suggesting an attempt to redirect users to malicious content. The presence of numerous embedded URLs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicate a pattern of using compromised sites for distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9989
Heuristics 7
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/vbs2139h7jomfhmplig5bdq07m/mixesasupik.pdf
- http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c79e4a784a7---23441990276.pdf
- https://s-serviss.lv/userfiles/file/sunijewedafov.pdf
- https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/5cd57dff7aa5813ae43e1cbb25c8c8d8/85978588929.pdf
- http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e986a61b39a---29958637597.pdf
- http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6b284ec32---vivixeximug.pdf
- https://aneri12.cz/res/file/15631950076.pdf
- http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/b010f8ab90a6543a5a26a37b70afdc29/zexewoxesirilikujimuxe.pdf
- http://c2r-auto.com/uploadfiles/file/2021071304532373499.pdf
- https://longhoang.vn/upload/files/56445276930.pdf
- http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/rh5cqj3ctsjvkjo7rue2qtlqt3/jiwerowuwamo.pdf
- https://webvitamin.vn/app/webroot/uploads/files/fajudusuzi.pdf
- http://mitcostruttori.it/userfiles/files/labirolu.pdf
- http://ankamet.com/userfiles/file/laveralapevokanel.pdf
- http://vyveva.eu/UserFiles/File/wenewevemuzukavemajoliv.pdf
- http://1984wnhs.com/clients/2/25/250e0aaa51dad033202e6c34d8602b4d/File/12743185720.pdf
- http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aa7c8db1b5d---15558140832.pdf
- https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/e0d57d5227fd2a6c01393d82977ad22c/joboxo.pdf
- http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606caa193847d---kuwitazar.pdf
- http://csc0851.com/userfiles/file/20210623135002_8yt2vw.pdf
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/1jkc5tituhbemm5jekpoqgiqeq/pudemo.pdf
- https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/94trsusp9je8j852etsvlppfb7/43245128187.pdf
- http://footstepfloor.com/upfiles/files/jesujixizuzusix.pdf
- https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/vntof69bjfvngj4jp1mofvb6po/xedusisitevimimeforowomen.pdf
- https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/75e1f261ea799bc70e0736e22a4a4693/44340282926.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=the+devil%27s+arithmetic+chapter+10+12+summary
- 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_off000112cf.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x112CF | 16792 bytes |
font_01_sfnt_off00012ae6.bin0babf6881f869ce3907e938783cc36fd41fa3595967617b924d948d2fc94eb9a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12AE6 | 11128 bytes |
font_02_sfnt_off00014509.bin7e89677795cf6e59000566fd1983f0a6df315b0d5ad279aa7ed8f2bb62098b30 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14509 | 17740 bytes |
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