MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of numerous external URIs, many of which are part of a link farm hosted on disposable domains, suggests a phishing or social engineering attack. The primary goal appears to be directing users to download potentially harmful files disguised as legitimate software.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://synerhu.ru/uplcv?utm_term=download+acr+pro+apk PDF link annotation
- https://buonoantonio.it/userfiles/file/wupusiper.pdfIn PDF document text
- http://autoneza.cz/UserFiles/File/rukomiz.pdfIn PDF document text
- http://xinyuemu.net/assets/202109/files/20210901065124951685.pdfIn PDF document text
- http://thriftstorewebsites.com/flash/thriftstorewebsites.com/file/remijogeninelupifisoparaf.pdfIn PDF document text
- http://jatechkj.pl/upload/fck/file/tupupigibisaxamume.pdfIn PDF document text
- https://classconnbio.com/img-jacson/files/61819051072.pdfIn PDF document text
- https://dongciao.com/uploads/files/202109012225295314.pdfIn PDF document text
- http://abwrichmond.com/uploads/files/zoton.pdfIn PDF document text
- https://praktijk.zorglink.nl/ckfinder/userfiles/files/vuxoritebifiluv.pdfIn PDF document text
- https://reparationmobile.net/userfiles/file/rukorewenopirivedobigim.pdfIn PDF document text
- http://thomas-zigon.de/images/file/janoposag.pdfIn PDF document text
- https://angel-juicer.com/FileData/ckfinder/files/20210906_0DCBE41B883A23CB.pdfIn PDF document text
- http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/399fc1f85bba2541a760a17fc4869e8c/wovozodufokuw.pdfIn PDF document text
- http://olguanaokulu.com/upload/file/26166993806.pdfIn PDF document text
- https://sofahatinh.com/upload/files/95682973235.pdfIn PDF document text
- http://banner-ever.com/ckImg/files/6797677924.pdfIn PDF document text
- http://feriaalainversa.com/uploaded/files/12964065460.pdfIn PDF document text
- http://sadiqandsons.com/userfiles/files/garifinumupemet.pdfIn PDF document text
- http://fcv-bo.org/data/fcv-bo/userfiles/file/gawazokojaxal.pdfIn PDF document text
- https://www.nbc.com.vn/ckfinder/userfiles/files/pusuxe.pdfIn PDF document text
- http://rockhouseschool.com/rockhouse/uploads/files/mufipajewa.pdfIn PDF document text
- http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613472a2227dc---96574405156.pdfIn PDF document text
- https://rwd.webseo.tw/upload/files/nemijaroxuguvubisedazoje.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_off0000bc16.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC16 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d42d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD42D | 10196 bytes |
SHA-256: 5211a66778b3ead32e716d76ecfa5c257a3eb511fb569a009cef22e5adac7b36 |
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font_02_sfnt_off0000eb23.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB23 | 16616 bytes |
SHA-256: ef2b62188345359db2d71ed42bdc3d6493dcb8cb5ecbf0dee25746b2aad4ac00 |
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