MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many of which point to compromised websites or link farms. Heuristics indicate it's a link farm on disposable hosting and potentially a phishing lure. ClamAV detection as 'Pdf.Phishing.Trojan' further supports malicious intent. The ML classifier also flagged it with high confidence.
Machine Learning
- Nyx PDF Classifier malicious score 0.9924
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://ketchas.ru/uplcv?utm_term=regression+lecture+notes
- http://sk-uralstroy.ru/uploads/files/wonek.pdf
- http://vitali-schulz-eiskunstlaufen.de/userfiles/files/lujefavagewowozetuz.pdf
- http://futurepoolandspa.com/ckfinder/userfiles/files/guledafakemajifapo.pdf
- http://kibbkw.com/uploads/file/97925848044.pdf
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/7f501b049923a5348b6eeece8af6d4ca/mewovegetepazidudesurulup.pdf
- https://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/hiiotjli4ti5d1glqee921tqcn/disajofusekun.pdf
- https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/7a133641e01ef388457cb8bc9de5e0bd/71487374113.pdf
- http://aardbeienfeesten.nl/uploadimages/files/1641998379.pdf
- http://waypl.pl/upload/File/jelaxifezijebusizok.pdf
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa41fd03f5---14531079849.pdf
- https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d88f1f93d13---59824882790.pdf
- https://paymentor.nl/uploads//file/41794945605.pdf
- http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/160859dfc51db0---vibup.pdf
- https://deltarealestate-eg.com/userfiles/file/zujirotexaromaxa.pdf
- https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/ad37500cf6ba2cac81e7709d1368acda/88052923272.pdf
- https://irisapp.cn/uploadfiles/fckeditor/20210621/file/16242571357471.pdf
- https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/bi0no3t0l6kn1nl2b34e89i9ot/69204065220.pdf
- https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c972cb21e8---lurusilusokigo.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16081d28f33001---64229262672.pdf
- http://littlepearlbooks.in/data/eimages/file/23391142438.pdf
- http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091ef593eb41---64735026878.pdf
- https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/15d121e0e0672f58f74dbe6f0036ae0e/20780615037.pdf
- https://agroadvanced.com/app/webroot/newsletters/editor/files/petaxubowitewefomalaj.pdf
- https://annjulieskarpmo.com/userfiles/file/79974432768.pdf
- https://erdenetpost.mn/userfiles/files/48052658523.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ea66.bin3257df70556ee63465ab00a4e424ed60ae49efda3b9ab95da26a675a9076891f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA66 | 10388 bytes |
font_01_sfnt_off00010208.bin2b63d9bd9078d89d4e92efb6b3bbdcfa0664a0f97052d04a0cb8e1a41b17a815 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10208 | 19708 bytes |
font_02_sfnt_off0001371a.bin34837fdfed7e6dc9e8c1ebc45eabef1064a6e89f8cd536305124148a4af1fb29 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1371A | 16168 bytes |
font_03_sfnt_off00014cb1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14CB1 | 16792 bytes |
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