MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. Analysis revealed it functions as a link farm, containing numerous URLs pointing to compromised CMS upload storage, likely to obscure the true destination. The document body is unreadable, but the heuristics and URLs strongly indicate a phishing or redirection scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
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://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160ac148dcf5f8---87151146032.pdf
- https://aawyx.com/sites/default/imageuser/file/91446884909.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16082a618f0fa1---giruxabopo.pdf
- https://hyundainhapkhau.vn/upload/files/muxudanawagonolomuzo.pdf
- http://weberstellen.ch/userfiles/file/nakojisenewi.pdf
- https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c17d5b58a36---96386167163.pdf
- http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6a16a5359f---kapitenewajav.pdf
- http://aklond.com/UploadFilesfile///2021061005465126.pdf
- http://amajyuku.com/files/files/8531317820.pdf
- http://adabaskimerkezi.com/upload/file/nilerirodararefadesazaveb.pdf
- https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/9f0b7ad5d97549a6dc2b830e3187274f/5315095158.pdf
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b4bc32d6b44---14646846147.pdf
- https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/rj7mg7sfb5bt2kgg7k5a2vfva1/45712465756.pdf
- https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a8a214c3165---setibuke.pdf
- https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9543556b3f---46874437089.pdf
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1607011aad711e---85940262159.pdf
- https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/445a99a4aaa2369fc80969274193887a/75467932927.pdf
- http://wtmongolia.com/materials/file/lunijegexuliniwuxituri.pdf
- https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/04074f781d1ecad8ca51619af614697e/jopetapunezixisoda.pdf
- https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/cspp3pc5bs59tb7o055f41pf9f/fupilofugibodasopawuxotul.pdf
- https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/ujvimb5g7h2hi79bg9caklhtlb/25609579964.pdf
- https://bya-ingenieria.com/ckfinder/userfiles/files/kesigesak.pdf
- https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/0a6d8h8eplvoi53863o21rn5j7/51541238819.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=1pm+edt+to+bst
- 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_off0000eb32.bin56561cb04528634d219100f3c5a234f7d3bb8fcaec896e0990fc4cf85ea66c94 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB32 | 10144 bytes |
font_01_sfnt_off000101af.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101AF | 16792 bytes |
font_02_sfnt_off000119c1.bin1353614ba3da4e7be60774185081d355a953b6c5ee2323daa95e932cd30f0545 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119C1 | 19136 bytes |
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