MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. It contains numerous embedded URLs that point to disposable hosting and appear to function as a link farm, a common tactic for phishing or distributing further malware. The presence of 'cmd+line' in the document text, coupled with external URI firings, suggests an attempt to execute commands or redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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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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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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://crewmak.ru/uplcv?utm_term=android+cmd+line PDF link annotation
- http://bbmpva.nl/fckassets/file/wikapusuduradenitaju.pdfIn macro / runtime command snippet
- http://twgo8.com/uploads/base/files/202109062130225642.pdfIn macro / runtime command snippet
- http://topoint.net/userfiles/fckFile/20210913025554.pdfIn PDF document text
- http://wixoon.hu/upload/file/davovalebub.pdfIn PDF document text
- http://ac-kenigsberg.ru/files/file/damelixibozerikisivubusin.pdfIn PDF document text
- http://drukarnia-warszawa.pl/pliki/file/losakajawesarajunavefip.pdfIn PDF document text
- https://afayl.com/userfiles/file/lagumagelodexewizudu.pdfIn PDF document text
- http://skupka54.ru/upload/m/79670714160.pdfIn PDF document text
- https://33mobility.net/uploads/files/45713748556.pdfIn PDF document text
- http://ssss-sangam.com/userfiles/file/33593277733.pdfIn PDF document text
- http://podhoru.cz/userfiles/file/10908919097.pdfIn PDF document text
- https://megatekspb.ru/sites/default/files/uploads/dogep.pdfIn PDF document text
- https://paron-rebondir.com/uploads/files/43193240828.pdfIn PDF document text
- http://medi-sen.com/files/files/56095206853.pdfIn PDF document text
- http://adance0112.com/upfile/editor/file/437860245.pdfIn PDF document text
- http://myappartement.de/web/editor/files/riniraxevo.pdfIn PDF document text
- http://fmmvn.net/userfiles/files/57370873450.pdfIn PDF document text
- https://holocaustresearch.pl/nowy/photo/file/33861875156.pdfIn PDF document text
- http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ac99f18cd1---somaxa.pdfIn PDF document text
- https://maintogelonline2.com/contents/files/robatatifata.pdfIn PDF document text
- http://moderncarrent.com/user_img/files/50726867681.pdfIn PDF document text
- http://slovoveri.org/userfiles/50310469691.pdfIn PDF document text
- http://doctour.hu/uploads/ckfinder/userfiles/files/jumepipa.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_off0000c88d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC88D | 17324 bytes |
SHA-256: 54c0ed739057942c43400924235daf8fe6b7f36ec5757b557aed77ddd99754ea |
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font_01_sfnt_off0000f5ea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5EA | 10084 bytes |
SHA-256: 2a11ddbb06c0d00e56f829aa8e8d60a464942d906531272b8c7f3c81c4a94b29 |
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font_02_sfnt_off00010c48.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C48 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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