MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains JavaScript actions and numerous embedded URLs, including one pointing to a link farm on disposable hosting. The primary URL, https://synerhu.ru/uplcv?utm_term=bookworm+popcap+download, suggests a lure to download content, likely a secondary payload or a phishing page.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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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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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JavaScript action low PDF_JAVASCRIPTPDF contains a /JavaScript action. 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://synerhu.ru/uplcv?utm_term=bookworm+popcap+download PDF link annotation
- http://konberdbio.com/upload/files/7978812524.pdfIn PDF document text
- http://sparan-art.ru/ckfinder/userfiles/files/7795265321.pdfIn PDF document text
- http://eko-gospodarstwo.eu/files/file/sudewoxagimazu.pdfIn PDF document text
- https://maintogelonline2.bet/contents/files/jefipuxiwunofogosu.pdfIn PDF document text
- https://gamma-electronics-eg.com/userfiles/files/40217682765.pdfIn PDF document text
- http://ntep2008.com/UserFiles/File/fabidupesalokugoro.pdfIn PDF document text
- http://ottotech.center/userfiles/file/dofifamofu.pdfIn PDF document text
- http://maginsaatmetal.com/resimlerfiles/vokulinopenozokimidipuxal.pdfIn PDF document text
- http://khodahoanglang.com/admin/webroot/upload/image/files/64760246034.pdfIn PDF document text
- https://majubesar.info/contents/files/jugurefulag.pdfIn PDF document text
- https://ventadeterrenosagricolas.com/userfiles/file/52563547148.pdfIn PDF document text
- http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/161356b4450087---kujorapenopepuruwo.pdfIn PDF document text
- http://artospace.com/pics/file/51208797357.pdfIn PDF document text
- https://noursportevents.com/wheelmarine/userfiles/file/45892264338.pdfIn PDF document text
- http://brianhaymore.com/images/e/file/93738779694.pdfIn PDF document text
- https://ceral.pl/ceral/pliki/file/xezufevozowogeba.pdfIn PDF document text
- http://haliburtonhighlandsheritage.ca/userfiles/file/fafexijax.pdfIn PDF document text
- http://aftckwt.com/uploads/file/31234897272.pdfIn PDF document text
- http://a-aqua.fr/ressource/site-image/files/xudipelepuvizezo.pdfIn PDF document text
- http://yevres.fr/ckfinder/userfiles/files/zupazanab.pdfIn PDF document text
- https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137bd3d9430d---nelatojuxik.pdfIn PDF document text
- https://sgotomotiv.org/upload/files/67263233043.pdfIn PDF document text
- http://ekogamma.pl/javascript/ckfinder/userfiles/files/3986734243.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_off0000be4c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE4C | 10416 bytes |
SHA-256: 41596a4df673bda4d7b27531b1fd819a654b29b413f0191e194081b3ed825646 |
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font_01_sfnt_off0000d5f1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5F1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ee03.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE03 | 17004 bytes |
SHA-256: df8401427aedda8d1363a45c4dd4655510d0e80a17f8033c7eaf4ad80cfd775f |
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