MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the document functions as a link farm, with numerous URLs pointing to compromised WordPress sites, likely serving as a lure for users to access malicious content. The presence of multiple distinct hosts and the use of UTM parameters suggest an attempt to distribute malicious links broadly.
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=how+to+compute+square+root+manually PDF link annotation
- http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/no2v49jmpuvulhs9216r3jlt1b/xigivibubowinojejiwojide.pdfIn PDF document text
- http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1607c2e023fdfd---47853852869.pdfIn PDF document text
- http://fresh-j.info/images/uploadedimages/file/20094836133.pdfIn PDF document text
- https://fundreamz.com/ckfinder/userfiles/files/kawasetodisigojineze.pdfIn PDF document text
- https://iwnta.com/userfiles/file/muralete.pdfIn PDF document text
- https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fc26c28d8e2---34835491840.pdfIn PDF document text
- http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16080f76fda0e0---15268634236.pdfIn PDF document text
- http://sellmysayarah.com/userfiles/files/gumivosudo.pdfIn PDF document text
- http://xn----9sbbnbtte4cyg.xn--p1ai/ckfinder/userfiles/files/resab.pdfIn PDF document text
- http://www.alex-vasilkov.ru/images/wisdom/file/80931406790.pdfIn PDF document text
- http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609de47fcb903---mufosuxodolokomazowosi.pdfIn PDF document text
- https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160acdd97a4cab---kakubufulolilipizadolobu.pdfIn PDF document text
- https://service-panev.com/userfiles/3480779051.pdfIn PDF document text
- http://phongthuyphatloc.com/luutru/files/fokuwanidodam.pdfIn PDF document text
- https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/8jnvddvmoqtuqsv92bnbb9t9ho/10121251959.pdfIn PDF document text
- http://4bx.pl/public/file/benan.pdfIn PDF document text
- http://mega-stainlesssteel.com/uploads/image/files/nitumeduvunudarunewen.pdfIn PDF document text
- https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/34d02ae5895b8e27b320f29dd8c3be1a/wufisa.pdfIn PDF document text
- https://mclandpin.com/calisma2/files/uploads/doboruxezugupikotafut.pdfIn PDF document text
- https://epiphanych.com/images/file/kovidibenakadavegodubonon.pdfIn PDF document text
- https://too.kg/wp-content/plugins/super-forms/uploads/php/files/8fa9a1fe614690aebb7969b91ababa56/sumufuroti.pdfIn PDF document text
- http://architetturaurbanistica.it/userfiles/files/xaxexadisusazitizab.pdfIn PDF document text
- https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/sobgnli2t06rgt0d0k1933d71b/tozobewagomuja.pdfIn PDF document text
- http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/160f16527d9e35---39088571278.pdfIn PDF document text
- http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160757811c9feb---24514449166.pdfIn PDF document text
- https://mallorcaboom.com/res/wysiwyg/file/todemilujigojesijog.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_off0000cfd6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFD6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e7e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7E8 | 17624 bytes |
SHA-256: 181f7b42824c1dccd9d5d78ec2be707ef064505add32064038b230acaafe80f6 |
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font_02_sfnt_off0001152e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1152E | 10880 bytes |
SHA-256: eef1c67645adfa4c8cf08a2c5cc33c25a0127437608087199f0fce578f5403eb |
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