MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links, many pointing to compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of multiple distinct hosts and the use of 'utm_term' parameters in some URLs suggest an attempt to obscure the final destination and potentially leverage SEO tactics.
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 http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160903b8679e6e---moxasawiwojanarasenera.pdf
- https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/b7e4c7b1b9ec3475b13a49f5b0e5aaf7/82079428508.pdf
- http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/160b7af26bb3aa---gezun.pdf
- https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160758193617fa---xiwesidunurovi.pdf
- https://avgdesign.com/userfiles/file/6689199420.pdf
- https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16072e82b1b2bc---jetalaruripulugaze.pdf
- https://fajanav.com/aym_image/files/60718052845.pdf
- http://nowator-zpu.pl/userfiles/file/30285536157.pdf
- https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/fdok5ndohje3rq6levvth2q058/nazufixesanugakog.pdf
- http://lulanjina.net/upload/files/24622835961.pdf
- https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c0d7ef4d98b0e0aa4346da3a276922a6/55965523019.pdf
- http://patp1ryb.ru/media/file/kebidorowepu.pdf
- https://robotics-institute.com/wp-content/plugins/super-forms/uploads/php/files/iks1t1uvr96kjplee3np0vdj1g/82165687514.pdf
- https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160d99b5127ba5---wabefojazagitu.pdf
- https://arerp.kr/data/file///watetasuno.pdf
- http://boathousebrokerage.com/userfiles/file/winojatuzomudile.pdf
- https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/491eba65779211a0301588ead63d61e4/motulevaxuwiwenenabakigan.pdf
- http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/i72mum4rcujkoo0ispn494pkt5/mujejivesajizamudopaxox.pdf
- https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/ih8f4qam24mmbm4k1vfot41b69/11714852391.pdf
- http://domainecomps.com/documents/files/88719183666.pdf
- https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078078e4426b---tawikibupimuxekurus.pdf
- https://allcreaturesinc.com/files/files/29472529099.pdf
- http://jjmcp.jp/userfiles/Image/file/79319481886.pdf
- https://hiddencliff.kr/FileData/ckfinder/files/20210610_DA17F378614BB949.pdf
- http://beloit1962.com/clients/8/83/8368a4f838dea3176655029ae9e337da/File/67747750872.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=philippine+culture+quiz+questions+and+answers
- 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_off0000ddb7.binb73e8fd67a2accdd0165bd3f89bf4f65fe0420df9c6acd7e58858cb36d4da43d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDB7 | 17080 bytes |
font_01_sfnt_off00010a52.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A52 | 16792 bytes |
font_02_sfnt_off00012269.bin3b265a331f286337b1eb07015f0781f0bddd41f3f6d09a293e25ad36078a80ac |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12269 | 11004 bytes |
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