MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and a machine learning classifier indicated a high probability of maliciousness. Heuristics identified the document as a link farm, with numerous external URIs pointing to potentially compromised CMS upload storage and disposable hosting. These links likely serve as a lure to phishing or malware distribution sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9986
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=ruin+and+rising+book+pdf PDF link annotation
- http://otestmanager.com/club/data/userfiles/file/20210901215237.pdfIn PDF document text
- http://motivationandmomentum.net/ci/userfiles/files/fulakor.pdfIn PDF document text
- http://tolltisztitas.eu/userfiles/files/rorivamibamixupotex.pdfIn PDF document text
- http://fratellilongoni.com/userfiles/files/rugujedotosizuniriv.pdfIn PDF document text
- http://heninrealty.com/userfiles/files/48182421321.pdfIn PDF document text
- http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1613362c2b3a10---48546090219.pdfIn PDF document text
- https://www.la-providence-ehpad.fr/ckfinder/userfiles/files/solizuxarokuruwemirokam.pdfIn PDF document text
- https://etonbio.com/newsLetters/images/file/xajos.pdfIn PDF document text
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138385bb3d10---wofipujuzasuramojixevugo.pdfIn PDF document text
- https://www.aifimm.it/admin/inc/ckfinder/userfiles/files/ximubanemo.pdfIn PDF document text
- https://zlato-eu.cz/upload/files/57967210738.pdfIn PDF document text
- http://tpdw.pl/userfiles/file/68553284320.pdfIn PDF document text
- https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/161384fb8205fc---25905440738.pdfIn PDF document text
- https://jasmijnbloemengroen.nl/userfiles/file/mawapaxixabolatulonukelo.pdfIn PDF document text
- http://www.uc-kushiro.net/images/library/File/pemiwivalibadupubonasegir.pdfIn PDF document text
- https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/4dc243e197737e787d789afa7d0540d2/3460650018.pdfIn PDF document text
- http://ap116.ru/userfiles/file/bunafevekufiwufi.pdfIn PDF document text
- http://xn--80aafmoni2biho.xn--p1ai/admin/ckfinder/userfiles/files/48103642086.pdfIn PDF document text
- https://almavilag.hu/files/files/13681378753.pdfIn PDF document text
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/c67c407cca67931f6c7b8577bd9f7f88/romute.pdfIn PDF document text
- http://bluelakehomestay.com/uploads/image/files/saranoxekejakarinut.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_off0001377a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1377A | 19712 bytes |
SHA-256: 2e25a3f3bc8a41e3fab196c559c221ad017ff591534c96fc03bc4d1b523d6190 |
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font_01_sfnt_off00016b14.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16B14 | 10776 bytes |
SHA-256: a96c4f99a721c54b57dd1ac22003ac7720c2824e9d26eaff9f7fcbbe2c94882c |
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font_02_sfnt_off00018385.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18385 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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