MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, many of which point to potentially compromised websites or disposable hosting, indicating a link farm designed to redirect users. Heuristics suggest this is a phishing or malware distribution attempt, as evidenced by ClamAV detection and ML classification. The presence of multiple external URIs and link farms strongly suggests a malicious intent to lure users to external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://crewmak.ru/uplcv?utm_term=quadratic+equation+graph+plotter
- http://siamsnail.com/media/userfiles/files/nejisituzamatekutuzamufa.pdf
- http://cargologicru.com/sadm_files/guzuzutasafu.pdf
- http://skolicka.eu/foto/images/file/kasowewumabusasapuwuwejo.pdf
- https://jotelek.hu/files/file/7433343201.pdf
- https://sunnyrosesschool.com/userfiles/file/35500730297.pdf
- https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b92c25a7fa---norojixujexonadiw.pdf
- http://www.herbertvanderbrugghen.nl/draft/ripojoz.pdf
- http://veterina-naslunci.cz/userfiles/file/87395135626.pdf
- https://gcr.goldcrownresort.com/magazine_files/files/lazeril.pdf
- https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/15e1cbfa7bdb0e072118e731eb1426d7/34529729030.pdf
- https://daiichitravel.com/uploads/news_file/79198577082.pdf
- https://limblength-sldf.com/userfiles/file/berikiwe.pdf
- https://saint-florentin.charcutier-traiteur.fr/ckfinder/userfiles/files/64434334639.pdf
- http://ivankrivanek.com/userfiles/file/18239724934.pdf
- http://spprp.pl/userfiles/file/89463097999.pdf
- https://nusamulticentralestari.com/Uploads/userfiles/files/nupojuporavi.pdf
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614c3244933f5---gopisexewofivaxugakatexo.pdf
- http://www.520amis.com/upload/files/kutepimepavetaxuwebun.pdf
- http://jingkangchem.com/upload/files/vowete.pdf
- https://dermatologie-francophone.com/userfiles/file/28784173056.pdf
- http://boschvietnam.com/files/usersfiles/files/kutogowakowigufa.pdf
- http://ctyrkolky-gamax.cz/data/dokumenty/25077635255.pdf
- http://olympicburger1988.com/uploads/files/zuzevewazewolekif.pdf
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/rrss3aunt38dvh48ob98u4p6o5/52661379463.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_off0000afa9.binb5f7d3db5bffe6f9d26c9904ed9b640f87187c777c723946a3c6868b6eb4da08 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAFA9 | 10932 bytes |
font_01_sfnt_off0000c86e.bin153600cdb79f7a4256aa9c475cc754b1a07c3dd6f7e051da1f36c3731b338c41 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC86E | 15904 bytes |
font_02_sfnt_off0000f11a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF11A | 16792 bytes |
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