MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs, with one specifically identified as part of a link farm on disposable hosting, suggesting a phishing or malware distribution lure. The PDF structure and embedded URLs point towards an attempt to redirect users to potentially harmful external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9911
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=ejercicios+de+nomenclatura+inorganica+pdf PDF link annotation
- https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/1e1a9265fb8e01abd598a25bebdf37cd/39551841307.pdfIn PDF document text
- http://dolonchem.com/upload/files/41221036647.pdfIn PDF document text
- http://salon-urody-bellis.pl/images/file/99238017426.pdfIn PDF document text
- http://boxerdapolenta.com/cmsimple/images/file/wojamazogevasujujiwu.pdfIn PDF document text
- https://defi128.phpascal.com/userfiles/files/22506280595.pdfIn PDF document text
- http://ks-system.co.uk/ckfinder/userfiles/files/37178187196.pdfIn PDF document text
- https://elegune.net/files/galeria/files/zekugufe.pdfIn PDF document text
- http://tangneylaw.com/admin/images/file/muveg.pdfIn PDF document text
- http://studiozoppini.com/userfiles/files/gatusitetilitofisujuviwo.pdfIn PDF document text
- http://songhakbbq.com/uploads/files/45220066359.pdfIn PDF document text
- https://bravo-hk.com/userfiles/file/63123126547.pdfIn PDF document text
- http://greatwalledmond.com/ckfinder/userfiles/files/neziginufutuduratipe.pdfIn PDF document text
- http://kiajihlava.cz/UserFiles/File/mitibelevemad.pdfIn PDF document text
- http://s2group.pl/userfiles/file/30007794636.pdfIn PDF document text
- http://lokalizacja-gps.pl/userfiles/file/18763982439.pdfIn PDF document text
- http://nhatrangpalace.net/app/webroot/upload/files/debunazamono.pdfIn PDF document text
- http://shendaoguoji.com/data/attachment/file/6003553358.pdfIn PDF document text
- http://appextskihjthj.handysociality.com/upload/files/fagovikezelivalo.pdfIn PDF document text
- http://daechienglishpark.com/ckfinder/userfiles/files/56479192493.pdfIn PDF document text
- https://superpackeg.com/userfiles/file/91958358585.pdfIn PDF document text
- http://thebankcardservices.com/uploads/files/8694336436.pdfIn PDF document text
- http://kusistoconstruction.com/userfiles/file/5732066096.pdfIn PDF document text
- http://ministerium.pt/files/62486035028.pdfIn PDF document text
- http://grandviewcommunity.com/userimages/60916131725.pdfIn PDF document text
- https://edusfera.pl/upload/file/138102139.pdfIn PDF document text
- http://tonyprins.nl/images/uploads/file/5514766922.pdfIn PDF document text
- http://cualuoiskydoor.com/webroot/img/files/teveja.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_off0000d876.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD876 | 20308 bytes |
SHA-256: 2dc561357b6143ff71e5af872343dbad7c4b1916abb3cec5cc53d57e260cc5fe |
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font_01_sfnt_off00010c17.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C17 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001242e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1242E | 11176 bytes |
SHA-256: 37e344f3eeca571ce947eb071b287b0a6ca8e1fe853f853d95e990165aa33e42 |
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