MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of external URIs and link farm patterns, suggesting a malicious intent to redirect users to potentially harmful websites. The ML classifier strongly indicated maliciousness. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing or redirection attack, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
Heuristics 5
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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=foundations+of+organic+chemistry+pdf
- http://vangphutai.com/images/uploads/files/10311121837.pdf
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161379de9decd2---nerekavuvisenovekopud.pdf
- http://heydarbaba.org/resimler/files/safibazijiwijogaruminir.pdf
- https://fentesmakina.com/paket/upload/files/90253446043.pdf
- https://alasclub.gr/neuro/ckfinder/userfiles/files/xanobimotilupovebukos.pdf
- https://aihr-iadh.org/uploads/FCK_files/file/16568078510.pdf
- http://aquamedia.cn/ckfinder/userfiles/files/64972411629.pdf
- http://mibenjamin.com/userfiles/file/gonatevifovunapalowawu.pdf
- https://delaneyllc.com/ckfinder/userfiles/files/96022767825.pdf
- http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/58392008573.pdf
- https://ags-car.com/upload/files/sitojirawo.pdf
- http://ei-windykacja.pl/upload/file/93573800154.pdf
- https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/277b8a3873a56b3df2c6578eaada8ba3/30378818489.pdf
- https://cordovajewelry.com/images/file/13733645762.pdf
- https://stancijanegrin.com/userfiles/file/vulewe.pdf
- https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614a2e64b1989---nebamukabopomemusosu.pdf
- http://veterinariomauracotti.it/userfiles/files/99191542641.pdf
- https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/3vm0h9ugs0bbuhdhb77nb282l6/wupinokimusugumizepud.pdf
- http://ongxoanhdpe.vn/upload/files/74690871680.pdf
- http://casadiriposomarsala.it/userfiles/files/40073997973.pdf
- https://laps.pl/userfiles/file/satelizekejuvosaporipuvu.pdf
- http://turinhotelcompany.com/userfiles/files/kujedukumaguzuneb.pdf
- http://kukubara.com/zdjecia/file/5773646303.pdf
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16140679ecd642---debewa.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_off0000d89a.bin5bce921edf4f188c5962261605ec2f0b66f871a587f5be6ae787493730fbd487 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD89A | 11212 bytes |
font_01_sfnt_off0000f282.bin9d3efce7a5d121f3650be5d8d82318d648d1b8a77b080df7d27480712560b77a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF282 | 17512 bytes |
font_02_sfnt_off00011f89.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F89 | 16792 bytes |
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