MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, many hosted on compromised or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of 'utm_term' parameters in some URLs further supports a phishing or SEO poisoning campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9917
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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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=java+read+barcode
- https://wfca-czech.cz/temp/userfiles/files/molabuzasubirobezilavax.pdf
- http://hitecds.com/userfiles/file/ruxebojaxirugab.pdf
- http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/16133637bd02a4---97649205114.pdf
- https://semangkamerah.com/contents/files/vovonekureki.pdf
- http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1614038e1d1100---bidodakar.pdf
- https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/3b7621e4a78839ac05543a0c9878b1a7/sufosepamogigip.pdf
- http://dabaizhongxue.com/upload_fck/file/2021-9-1/20210901093015207908.pdf
- http://vip-cond.ru/userfiles/file/54433517813.pdf
- http://mynotary.ca/sites/all/sites/mynotary.ca/files/lemit.pdf
- http://mislenyiallatorvos.hu/userfiles/file/xidudarado.pdf
- https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/j9e3vj5fdnmkuj2ba6kqj31i7q/lomafabiwudukon.pdf
- http://www.findvoters.com/userfiles/file/newobinov.pdf
- https://liftsystems.ro/LiftFiles/file/loriwem.pdf
- http://leasingtowers.com/ckfinder/userfiles/files/tetadabubosa.pdf
- http://rld-carbon.ru/file/19659032797.pdf
- http://www.yoko-ono.be/images/userfiles/file/74891240916.pdf
- https://cheeselicious.net/UserFiles/file/pofidumupep.pdf
- http://zvaracskaskola.eu/editor_uploads/system/files/27457983944.pdf
- https://celebicatering.com/upload/ckfinder/files/8990881901.pdf
- http://cc-loges.com/uploads/file/nekurojopexesujazik.pdf
- https://adesso-moosburg.de/images/file/retigagesabumu.pdf
- https://cemb.ca/upload/editor/file/56419985793.pdf
- https://jaurrieta.net/USERFILES_JAURRIETA/files/wufimaveredavo.pdf
- https://sadex.pl/fck/file/zaliwexuvojowe.pdf
- http://theffirm.com/userfiles/file/63416093929.pdf
- https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140914066b65---30365583925.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d10f.bince721d9179e7d4b1d38ba288473d66f9ad2c989b045fcbbcebc54a52ed111a1d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD10F | 17424 bytes |
font_01_sfnt_off0000fdf2.bin2cf0b12576a55c4bba8d43909ac5ff15831334357476e9232a9ca87e569752fd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDF2 | 10052 bytes |
font_02_sfnt_off00011459.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11459 | 16792 bytes |
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