MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm directing users to multiple compromised WordPress sites, which in turn host other PDF files. This behavior is indicative of a phishing or malware distribution campaign, likely using spearphishing as an initial access vector. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
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://suma.ca/upload/editor/file/44658183435.pdf In PDF document text
- https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/b673994f516e6fdca35f3969f22d1256/37802421620.pdfIn PDF document text
- https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/auljlg610g706ml6u02300koqj/62920950597.pdfIn PDF document text
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/bnho6d7ehtsgbd3pcdddbvjn34/74047254852.pdfIn PDF document text
- http://agnieszkapawlik.com/userfiles/file/71568480283.pdfIn PDF document text
- http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609654ca29314---95857990025.pdfIn PDF document text
- http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/3b3cfc29ff2a30d48a0a76b527d368be/84086734500.pdfIn PDF document text
- http://sns.hu/_user/file/11442337189.pdfIn PDF document text
- https://argumentua.com/i/file/46547205842.pdfIn PDF document text
- https://thefertilizergranulator.com/d/files/jifopuwepevato.pdfIn PDF document text
- http://naturabliskociebie.pl/userfiles/file/giwagewixav.pdfIn PDF document text
- http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c15bad4252---78213001700.pdfIn PDF document text
- https://castilloexterior.org/ckfinder/userfiles/files/gibunusegekuga.pdfIn PDF document text
- http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/16080e969c1172---todezabulujibudu.pdfIn PDF document text
- https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ae65200db0---88583271199.pdfIn PDF document text
- https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/856aa38138e04d8ff99a441e655811dd/36996075894.pdfIn PDF document text
- http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a426ffe26ce---kikesanixibit.pdfIn PDF document text
- http://ilovegabal.net/fckeditor/_upload/file/1731128566.pdfIn PDF document text
- https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/958fec74ded1c65a7fb1f069c80d0a6b/wusaxetadusupefulesibu.pdfIn PDF document text
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/3c3857fb21d4d02a85341a9496b33081/24628041949.pdfIn PDF document text
- http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607132c7084d3---20079190120.pdfIn PDF document text
- https://led7.ru/file/nesob.pdfIn PDF document text
- http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9b24b18088---muwunulorabaninemokedan.pdfIn PDF document text
- https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/rfl4it18fbj2q8d9r6t10lviqb/12595531244.pdfIn PDF document text
- http://kiemtoanhaiphong.vn/upload/files/pipusumu.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=why+does+my+washing+machine+say+f02PDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f364.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF364 | 11112 bytes |
SHA-256: e7b6b0cbab98700ce951e4f6575c1465196d127876f137cbb49ae084a3dd9927 |
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font_01_sfnt_off00010d0c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D0C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001251e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1251E | 17116 bytes |
SHA-256: f83d8e4ef8dd9fc31340a7651f8b6337e3ed7dd7c358009e52454e8197187c2d |
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