MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains numerous external URIs, including one pointing to 'chcial.ru' with a query parameter suggesting a lure for 'android apps not in play store'. The PDF's structure and the presence of multiple distinct hosts suggest it functions as a link farm to distribute malicious content or phish for information. No scripts were extracted, but the PDF structure itself is leveraged for malicious redirection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 5
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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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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://chcial.ru/uplcv?utm_term=android+apps+not+in+play+store PDF link annotation
- https://trungtammatnamviet.vn/upload/files/48339077354.pdfIn PDF document text
- http://jamalcar.com/userfiles/file/nudetefidetaxidi.pdfIn PDF document text
- https://pierrelemagicien.com/userfiles/file/rumaweboxakadojazifimoro.pdfIn PDF document text
- https://turkeyinsurance.info/images/file/23529812762.pdfIn PDF document text
- http://cafehinglung.com/uploads/files/1670389329.pdfIn PDF document text
- http://bannails.com/fckeditor_userfiles/file/86838309708.pdfIn PDF document text
- https://www.highettmetal.com.au/application/third_party/ckfinder/userfiles/files/37740735522.pdfIn PDF document text
- http://angelofthewinds.net/ckfinder/userfiles/files/36940756752.pdfIn PDF document text
- https://horgaszvelem.hu/ckfinder/userfiles/files/29909918189.pdfIn PDF document text
- http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133953cdcf76---71719709811.pdfIn PDF document text
- https://signos.larrialdiak.es/files/galeria/files/82860671318.pdfIn PDF document text
- http://cs-web-design.de/ablage/userfiles/files/16623836763.pdfIn PDF document text
- http://evo-models.com/uploads/userfiles/files/90416259471.pdfIn PDF document text
- https://www.osteopathe-montpellier-sud.fr/ckfinder/userfiles/files/dimojagujigipaminitusat.pdfIn PDF document text
- https://divetechmarine.com/contents/files/witabikim.pdfIn PDF document text
- http://lingeriedediva.com/UploadFile/file/2021090807324673499.pdfIn PDF document text
- https://austdoorcaocap.com/upload/files/wusonoregeminisudugigewa.pdfIn PDF document text
- https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/uhur0tigqv74ge6170p9887e8s/9931491136.pdfIn PDF document text
- http://cattaneoarchitetti.it/userfiles/files/sekatisuwemija.pdfIn PDF document text
- http://tongchangkj.com/uploadfile/file///2021091705161618.pdfIn PDF document text
- http://sanarina.de/ckfinder/userfiles/files/gowonezeradovojosilu.pdfIn PDF document text
- https://accesoriosalmayor.com/images/userfiles/file/6095458856.pdfIn PDF document text
- https://alihuata.com/userfiles/file/16988050975.pdfIn PDF document text
- http://tfe-design.dk/userfiles/file/vigoxetamotosur.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_off0000db0d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB0D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f324.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF324 | 10480 bytes |
SHA-256: 8e750bd22b7295afd18e35e9aa0867987fcf91460fd05f2c9dfe0877dd234db8 |
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font_02_sfnt_off00010b17.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B17 | 18712 bytes |
SHA-256: f515bd9b4273b3e356794f78cae8e8b6daa0c8238f6f3a1fb3ce49a61f5f757c |
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