MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised websites and potentially disposable hosting. These links likely serve as a lure for phishing or to download further malicious payloads, aligning with spearphishing attachment tactics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9958
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/5d9fd0752653c1930165fd589fab35c6/78249990148.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cdf5a573a7b---lelomi.pdf
- https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/ohffvvhml1qc2727j2j9m1su2g/lereratuno.pdf
- https://shopinhome.com/ci/userfiles/files/94660000186.pdf
- http://gyobel.it/public/file/89381473752.pdf
- https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/0f62da9cfef4e14fe450e60605018887/53610382281.pdf
- http://brandweeramsterdamamstellanden.nl/userfiles/file/78335056431.pdf
- http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607a692b5b08d---73478403631.pdf
- http://gocreate.termall.pl/upload/fck/file/86507421341.pdf
- http://webelievedin1984.com/clients/6/67/676624d6593aa512bfa6e10e765af00e/File/91661774075.pdf
- https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/94fa2bf60e747422a81dfe38469144da/77368626015.pdf
- http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/dvvp2lg1rtcrt9p1k4k7nnsg35/pejagimudosufi.pdf
- http://enjoyisagenix.com/ckfinder/userfiles/files/lonawefemukobe.pdf
- https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/2d0314e68199c2d284fcdc1d4232b6c4/63851392482.pdf
- https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aef426895b7---18206875582.pdf
- https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/909a40caa695a81d2e23cebc2e7434ec/39640046457.pdf
- http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb8ae6c87e---40228941853.pdf
- http://diysmart.net/userfiles/file/82978803633.pdf
- https://daaeportrett.no/upload/file/12741361429.pdf
- https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/f7e4846df43ece9b894bde5ae14545d3/82766105874.pdf
- http://tkhomedeco.com/assets/uploads/ckedit/files/20210625021443.pdf
- https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbe6f00209---28788272247.pdf
- https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/7151b666c4ff8125b6796358f5287ad8/pivivugalu.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=how+do+you+reduce+size+of+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_off0000d374.binceaef6a4dfbbb3d030b62a16626e493f47cc4eeb59a92f8627338a603aafc93d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD374 | 17052 bytes |
font_01_sfnt_off0000ffc8.binb67234d63729c67208c001669fac7eaef44b5cd2853002aef2c8506ae32e8d95 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFC8 | 10556 bytes |
font_02_sfnt_off00011809.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11809 | 16792 bytes |
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