MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to various domains, many of which appear to be link farms or compromised sites, suggesting a phishing or malware distribution campaign. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' further supports this, indicating the document is designed to redirect users to potentially harmful content. No scripts were extracted, but the overall structure and URL patterns are indicative of a phishing lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9936
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://crysiq.ru/uplcv?utm_term=3+divided+by
- http://kusadasidentalclinic.com/img/userfiles/files/62429371006.pdf
- https://meganimal.pt/site/upload/file/zolunaviropugosirededag.pdf
- https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/46f0ce4fc6a4d5cef8787f5cdb75fae5/75972147192.pdf
- http://tungalag.mn/userfiles/files/kagekeminisakariluz.pdf
- http://anhuifan.com/upload_fck/file/2021-5-10/20210510162638521031.pdf
- http://myredm.ru/uploads/file/64140528353.pdf
- http://notarbrazda.cz/userfiles/file/18713766091.pdf
- http://whs1963.com/clients/7/75/758a827d59fb1c2827eec60421ffdc22/File/futusokasudavibawukinis.pdf
- http://crosswaysrecruitment.com/userfiles/file/pudetojatufevuforebuvomak.pdf
- https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/nm14pdcdhulhise740b1sj3jt6/zajilolagigofepa.pdf
- https://skyzoan.com/cake/beta/userfiles/file/5559730740.pdf
- https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/dc0c6b440649b799b3df511ce519860f/79137747095.pdf
- http://easttbirds88.com/clients/d/d7/d767393c090093bf18db16876c07b5c3/File/wimulopo.pdf
- http://papinchess.ru/userfiles/file/22575970752.pdf
- http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/3l49at1ip8jn5spqr4mkshn5l7/61374314657.pdf
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094981c4e78d.pdf
- https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c369a730f70---fisurejitiwarorilut.pdf
- http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/e57eb1e76f18def3ace43d81b52b8588/jipilajalobutulasuwo.pdf
- https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/0507ef68abe6b54eb82cec63cb801df1/jerididadedipumegokoxima.pdf
- https://infoenergie-loire.org/userfiles/file/14260418298.pdf
- https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160918bbbc8037---morilobawidi.pdf
- https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/aab2ce19fe60b31540f15e66359af7f6/28704802160.pdf
- http://kimbuunguyen.com/uploads/userfiles/file/judozemukamu.pdf
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607d23d766cd0---87977898339.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_off00011d47.bin27410d70b34e34dfd326a0ac651a7f1ae031c5cb30a72e6131590c1548a53150 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D47 | 17420 bytes |
font_01_sfnt_off00014b27.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14B27 | 16792 bytes |
font_02_sfnt_off0001633d.bin57a9d0a89a1dc9187e40fb6936ae5ed284b4ec2d0a8065d78ea0fc5a90af9e4b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1633D | 9836 bytes |
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