MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external URIs and is flagged as a link farm, indicating a likely phishing or malware distribution attempt. The embedded JavaScript stream and ClamAV detection further support its malicious nature. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. 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=how+to+detect+hidden+apps PDF link annotation
- http://liqaa-lb.com/files/userfiles/files/koputiwume.pdfIn PDF document text
- http://vanhacollection.com/images/files/rujubejawiniwipewul.pdfIn PDF document text
- http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/56319700675.pdfIn PDF document text
- http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16148a91362157---82377552134.pdfIn PDF document text
- https://prestinieurope.com/userfiles/files/vakijejotix.pdfIn PDF document text
- http://novehorizonty.sk/userfiles/file/senedinixij.pdfIn PDF document text
- http://sbriz.ru/userfiles/file/25435280559.pdfIn PDF document text
- http://tabouligrill.com/ckfinder/userfiles/files/puput.pdfIn PDF document text
- http://op-gold.com/ck_image/files/fegodivaferupavenemituf.pdfIn PDF document text
- http://duquenne-moteurs.fr/webroot/upload/files/bozetoxozemezunapazaluba.pdfIn PDF document text
- http://theeultimatenetworker.com/ckfinder/userfiles/files/fawis.pdfIn PDF document text
- https://tailormade-sales-marketing.com/userfiles/file/58309030649.pdfIn PDF document text
- http://world-green-hope.com/uploads/files/99347385270.pdfIn PDF document text
- http://investgeorgia.ge/userfiles/file/rinozuwiguwotofefegorojuz.pdfIn PDF document text
- http://racecross.com/upload/edito_fckeditor/file/29599400104.pdfIn PDF document text
- https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/ec2c330a68cae366a71ec7cc73117a3c/68281031296.pdfIn PDF document text
- http://stoka-saarlouis.de/userfiles/file/lakiba.pdfIn PDF document text
- http://feuerwehr-mittenwalde.de/mediathek/files/ketivot.pdfIn PDF document text
- http://kingsauto-bar.com/js/upload/files/vanafawodupalelawudabax.pdfIn PDF document text
- https://uslugiinzynierskie.com/eurostyl/photos/file/bokogewizidulivi.pdfIn PDF document text
- http://restavratorstvo.com/ckfinder/userfiles/files/wosuguxive.pdfIn PDF document text
- https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/kb1gtnpfmtgfkekfukb9sa97jc/sisenasi.pdfIn PDF document text
- http://jnnycc.org/userfiles/file/61988988962.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_off0000cd43.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD43 | 17328 bytes |
SHA-256: 9f51003bb75dab904551c637d3b8a3d2024002b7ff1f7d2d74e027988ba21a9d |
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font_01_sfnt_off0000f90c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF90C | 10540 bytes |
SHA-256: db49fdd323c766a6331f8ffcd28a42528a7e11840806852910af4489413a51db |
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font_02_sfnt_off00011108.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11108 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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