MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or appear to be part of a link farm designed for SEO manipulation. One prominent URL, 'https://synerhu.ru/uplcv?utm_term=lightroom+full+unlocked+mod+apk', suggests a lure related to software downloads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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=lightroom+full+unlocked+mod+apk
- http://tomboy2.com/images/library/File/sagutetopugimewutop.pdf
- http://amunt.madteam.net/ckfinder/userfiles/files/remowidixerodujapixobu.pdf
- http://agro-partner.com/Image/files/54512659068.pdf
- http://bulk-supplies.com/userfiles/file/5780672799.pdf
- http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16137138d822ca---86624193934.pdf
- http://abakus-routing.co.uk/ckfinder/userfiles/files/rapavafesujasezudane.pdf
- http://hla.vn/upload/files/32156039593.pdf
- http://avvocato-callegaro.it/public/file/9074072485.pdf
- https://signika.pl/Upload/file/67617868044.pdf
- http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f4c6ea27db---vujidogutigeborizadi.pdf
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161336f76368d8---sibijasinibu.pdf
- http://simp-q.ru/userfiles/file/luxifelefabikorub.pdf
- http://client.diffuse.info/files/75701858306.pdf
- http://dintainoodle.com/uploads/files/sujudodulidero.pdf
- http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f88b64cda9---35036376816.pdf
- http://westfallassociates.com/documents/file/jorilibesazu.pdf
- https://stopserv.ru/files/file/datuva.pdf
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/161450cf8ef969.pdf
- https://webshopplus.nl/app/webroot/files/userfiles/files/21997595560.pdf
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/j7kjru0fuli871qk05ehk7iio5/nedut.pdf
- https://archielectronics.com/userfiles/files/27475121452.pdf
- http://ufnk.fr/app/webroot/files/file/xexovejakujedodowave.pdf
- http://marthomaiticherukole.com/userfiles/file/59902685610.pdf
- http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ebd4c67918---22190146848.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_off0000b6ba.bin5adc7256460f846c6be9ff6a9dd3f577b07e981eb6a6218e7f6964e6a8e59fc6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB6BA | 11048 bytes |
font_01_sfnt_off0000d00b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD00B | 16792 bytes |
font_02_sfnt_off0000e81d.binf3047a58276e453552981494febb8917e201ac48b7b968fc3ad6781adcce0eb9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE81D | 15816 bytes |
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