MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a large number of external links, many of which point to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious or phishing content. No scripts were extracted from this sample, but the overall structure and URL patterns are indicative of a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
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://laborke.ru/uplcv?utm_term=reading+for+english+learners
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16085f149f3442---15465465654.pdf
- https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607be52910e98---jebenotufetomef.pdf
- https://luminex.pl/upload/file/kazulenonej.pdf
- http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bfbb7b1a8e2---pibizovegimanovineseku.pdf
- http://drapikowski.pl/uploaded/fck_files/file/pimijonazikanusedatebe.pdf
- http://fritz-fahrlaender.ch/download/20332514704.pdf
- http://esoftland.com/userfiles/file/12767863175.pdf
- http://simonhoirup.dk/userfiles/file/62797907523.pdf
- http://brandnewgoods.net/userfiles/file/ketepuwunorokowovogiw.pdf
- http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a574d454d6e---kovojirekejevotazobosomu.pdf
- http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac32b250a74---jijirurukofix.pdf
- http://xn--k1akb4c.xn--p1ai/userfiles/file/nebafurijikidil.pdf
- https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606c65ba0f7cc---kizekefep.pdf
- http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a9d13522278---fixuxanuruwasuje.pdf
- https://espaciocultivarte.com/ckfinder/userfiles/files/62306678577.pdf
- https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c970ef51ab6---70059648025.pdf
- http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8315713c8---53674956654.pdf
- http://casaatlantida.com/userfiles/file///51015348990.pdf
- http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e10cf07e88---wukolavesapekumifigulun.pdf
- http://campfirewtx.org/userfiles/file/74758676909.pdf
- http://austria-ex.com/images/blog//file/71743321449.pdf
- https://ubranni.com/uploader/files/81070360835.pdf
- https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16086ebeb1b0e5---27332091502.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_off0000ee68.bin4d604611dab8ed824a8ba4d1d5f0fb53ad02ea02108641cf3383398acb7838ab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE68 | 10580 bytes |
font_01_sfnt_off00010634.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10634 | 16792 bytes |
font_02_sfnt_off00011e46.bin2bf1a564454b0aa216a1d165502007620cb5f1897b7d8da22a1a499288a9f3be |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E46 | 18492 bytes |
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