MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded JavaScript stream and numerous external URIs, many of which point to potentially malicious domains hosting PDF files. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host many links on disposable domains, a common tactic for phishing or malware distribution. The presence of JavaScript indicates potential for further malicious actions, such as downloading and executing additional payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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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LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMANDExtracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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.puskinas.lt/ckfinder/userfiles/files/68376353928.pdf In PDF document text
- http://spakimthi.com/upload/files/derolitatowikikukik.pdfIn PDF document text
- http://charmingcurls.se/upload/file/51275617363.pdfIn PDF document text
- http://residencelesaline.it/userfiles/files/75647217290.pdfIn PDF document text
- http://serramentisiciliano.it/userfiles/files/novetimige.pdfIn macro / runtime command snippet
- http://coreaad.com/DreamDataUpload/file/2354379631.pdfIn macro / runtime command snippet
- http://rlponder.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/14221918521.pdfIn PDF document text
- https://mpressivelabels.com.au/application/third_party/ckfinder/userfiles/files/vifizisuduno.pdfIn PDF document text
- http://qhchemicalsfeed.com/upload/files/foronomezevogifegipug.pdfIn PDF document text
- http://shrlie.com/upload_fck/file/2021-9-8/20210908045753211208.pdfIn PDF document text
- http://www.fonfe.com/uploads/files/33884198733.pdfIn PDF document text
- http://quimis.net/js/ckfinder/userfiles/files/xusuterumuj.pdfIn PDF document text
- http://mofrantech.com/userfiles/file/dasabimexiwatel.pdfIn PDF document text
- http://abwingscolley.com/uploads/files/gozasemowari.pdfIn PDF document text
- http://viral-list-machine.com/ckfinder/userfiles/publics/files/zebup.pdfIn PDF document text
- http://abwingssuffolk1.com/uploads/files/tunuwositegizu.pdfIn PDF document text
- http://scuderia512.com/js/upload/files/3873010155.pdfIn PDF document text
- http://aeon-dev.com/uploads/files/202109111046435017.pdfIn PDF document text
- http://officeharbor.com/pdtInfo/72846721947.pdfIn PDF document text
- http://niszczeniewaw.pl/userfiles/file/7263569704.pdfIn PDF document text
- http://prestopc.it/upload/file/kepesifasavamipuren.pdfIn PDF document text
- http://residencelesalinIn macro / runtime command snippet
- https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=hill+climb+download+for+windows+7PDF link annotation
- 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_off0000d535.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD535 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ed4c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED4C | 10672 bytes |
SHA-256: 6316404aea5922afeaacfaae6f887cadbc6ba7aacca52e6b9e6343bfed41192e |
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font_02_sfnt_off000105c3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105C3 | 18692 bytes |
SHA-256: 2f9736a7e5316de817d0355bc6f373ee696b7dc98116c1f37b871292b02ac654 |
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