MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged by multiple heuristics and ClamAV as malicious, specifically as a phishing or trojan. It contains numerous embedded URLs that point to compromised WordPress sites and other domains, suggesting it functions as a link farm. The primary purpose appears to be directing users to malicious content or phishing sites, leveraging the 'acid+base+titration+worksheet+with+answers' UTM term as a lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
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://nomylo.ru/uplcv?utm_term=acid+base+titration+worksheet+with+answers
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160705a9c0095f---79804872074.pdf
- http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0dd4378c0---67791974166.pdf
- https://consultingexpert.eu/fckeditor/userfiles/file/93156945638.pdf
- http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160792abd7b0db---66479359913.pdf
- http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160880278de2b8---xetag.pdf
- http://pokeocncafe.com/uploads/files/ludilulivafu.pdf
- http://gps-ambroisie.com/ressource/site-image/files/60875886144.pdf
- https://oilbasaro.com/web/images/ckfinder/files/20210819112418.pdf
- http://stylekd.ru/files/94035601805.pdf
- https://digireg.nz/upload/rikanujibegodezulaganifon.pdf
- http://campcolefamilyreunion.com/clients/82065/File/80633860607.pdf
- https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d85118908b---ferog.pdf
- http://www.deco-interieure.com/userfiles/file/biwowitipofenoj.pdf
- http://grafiport.com/userfiles/file/sixurexiwi.pdf
- https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/6440f1bdb6308eacb01b085ebefb9205/powixuv.pdf
- https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/5f13a2e4d53d1f136221a6fc871343af/vojiki.pdf
- https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/22ac8b71f348c203e75b623690497841/geladinazewibinejil.pdf
- https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/6428ilq1ianv5o058l38g5e1h7/xuramipoxi.pdf
- https://www.domaine-de-la-ferme.fr/ckfinder/userfiles/files/906399319.pdf
- http://infosierra.es/images/editor/83716333120.pdf
- http://jrmhandling.nl/upload/file/46509658778.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_off0000e23a.bina980f39f79952992670ef6b508303a360ed85b4c08cd75b4c5e4f34d657d9a79 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE23A | 10720 bytes |
font_01_sfnt_off0000faea.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFAEA | 16792 bytes |
font_02_sfnt_off000112fc.binfd3fd3f93d393bd8f7320e85cce7240ff8463710ae24a4d5d8d216fc268772fe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x112FC | 16784 bytes |
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