MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document functions as a link farm, directing users to various external URLs, some of which are hosted on compromised WordPress sites. The primary purpose appears to be to lure users to malicious websites through a collection of disguised links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9957
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=android+how+to+record+audio PDF link annotation
- https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/9bf4ba8de5f6248f2388a75d14453934/sewadin.pdfIn PDF document text
- https://www.rapn.ru/ckfinder/userfiles/files/namajusosesalomo.pdfIn PDF document text
- http://exmar.it/foto_fck/file/fudenusol.pdfIn PDF document text
- https://cplastik.cz/data/cms/file/fexofemuwisamud.pdfIn PDF document text
- http://cnwt.mgo.cool/upfile/files/2021/09/23/80625473198.pdfIn PDF document text
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/7n0i2i0fu6e0e2jg6algo5imv3/50735256246.pdfIn PDF document text
- http://vetsnab32.ru/userfiles/file/7631906186.pdfIn PDF document text
- http://hfnhsw.com/upload/files/83245596417.pdfIn PDF document text
- http://phutungototuanphat.com/img-tvdl/files/43371715100.pdfIn PDF document text
- http://gerd-pollak.de/userfiles/file/kobimatapuzifibudigabi.pdfIn PDF document text
- http://www.pattyn360.com/upload/forum/files/gexirofijilefirugos.pdfIn PDF document text
- http://rockhouseschool.com/rockhouse/uploads/files/folefe.pdfIn PDF document text
- http://aitrans.org/UploadFile/file/F1202109031426192440.pdfIn PDF document text
- http://dylogistics.com/userData/board/file/timububozixuzi.pdfIn PDF document text
- https://hefcom-hydraulics.com/ckfinder/userfiles/files/37897284460.pdfIn PDF document text
- http://royalgroup.at/tmp/kofuvew.pdfIn PDF document text
- https://autoroman-service.ro/imagini_ws/31548656751.pdfIn PDF document text
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/9eb4b9cd3a9eb4f30313f962ed90c901/62134302171.pdfIn PDF document text
- http://reklama-kemerovo.ru/files/files/luluwan.pdfIn PDF document text
- https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/b677787e77aad032564a2c787f90c134/sevaxaxibigidijidiweledu.pdfIn PDF document text
- http://xn--80aafjbaeihgganggf9ajkncugh2a.xn--p1ai/pict/file/25154885358.pdfIn PDF document text
- http://mayjack.com/upload/files/34828614501.pdfIn PDF document text
- http://ambulatorioveterinarioilprato.eu/userfiles/files/ronuzawugafud.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000adf4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xADF4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c60b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC60B | 10420 bytes |
SHA-256: 2a6983a76d9f5d5b060c06ff86a0b5f3f1e4691bb6d4b367d2d99ebf6664a4d7 |
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font_02_sfnt_off0000dda7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDA7 | 14764 bytes |
SHA-256: bf01d226a446a58021bb467b84266020e8cbac8fd4aaffcc35cd0b76ae9f4037 |
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