MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of external URIs and links to compromised WordPress uploads, indicating it functions as a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The document body is unreadable, but the heuristic firings point to a malicious link distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9913
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://queure.ru/uplcv?utm_term=e%C4%9Fitim+vadisi+ygs+biyoloji+pdf+indir
- http://tolltisztitas.eu/userfiles/files/benovipirorefuraledeb.pdf
- http://oodow.cn/upload/file/210717170757179031y1dog3fg2vve.pdf
- https://www.rekalibracija.com/wp-content/plugins/super-forms/uploads/php/files/c9956e5ad30087fa0291c34b8ec74474/84048847280.pdf
- http://agro-pasz.pl/ckfinder/userfiles/files/gazosogesulus.pdf
- https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/b337b43d97c08ab2bf69bda310298d28/81869122599.pdf
- http://lab4050.com/upload/editor/file/rifamatuxuwusaloresojugo.pdf
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608757500020f---26419308510.pdf
- http://feldbach-tourismus.at/files/3247854254.pdf
- https://vildmarksjagt.dk/userfiles/file/sinebajareguvidolaw.pdf
- https://bataretak.com/img/files/file/20926191568.pdf
- http://roycraft.ca/userfiles/file/nuzejubudijexixepolalu.pdf
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160aaaac431099---tutebojej.pdf
- http://agendatourvietnam.com/hinhanh/file/56209524505.pdf
- https://bmw-zona.ru/uploads/file/nazemoxisowamifixubilo.pdf
- https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/7a46aaf2b234e58ae6b636fec9ee826e/dejexijaju.pdf
- https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/588b34b4e613a6ab4cf7a98b160ffea4/21063954536.pdf
- http://1960vonsteuben.com/clients/d/df/dfb5e1b83ea85bfdc5ef1da934264264/File/88812245929.pdf
- https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/52d76713bd5c485a8365d62d4c8869dc/79346139809.pdf
- https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/256d3874c8eca54bde877d752b621d9e/62826334595.pdf
- http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607c76aece273---kadud.pdf
- http://naoshima-habitant.com/images/blog/file/6656571297.pdf
- https://bluetact.com/ckfinder/userfiles/files/wizavifuramikubexularisan.pdf
- http://mfcwestenkwartier.nl/beta/userfiles/file/xarerunedi.pdf
- https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/r6ir0fhirsafs8jfug3f88c58d/ratolomirutus.pdf
- https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/iloct1caniojregra67n5g7dlb/niseninalelaxap.pdf
- http://gopherandsquirrelcontrol.com/admin/images/file/dumoma.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_off0000cdf6.bin605845d87f15f2f22afdd0a5337d0274ed561409c181c6dfcdc7eea729d95869 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDF6 | 17356 bytes |
font_01_sfnt_off0000f8d5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8D5 | 16792 bytes |
font_02_sfnt_off000110ec.bin0bc77dfcad4ac872c78424fdb6a0f9b2907035d6658ed27c002112badb9acd0c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x110EC | 11376 bytes |
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