MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as Pdf.Phishing.Trojan. Heuristics indicate it functions as a link farm, directing users to multiple compromised WordPress upload storage locations. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of numerous links to potentially malicious sites strongly suggests a phishing or malware distribution attempt.
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://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/vlii82h1emiuse4k87n3ao0ucd/30860647785.pdf
- http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16077b7e636001---tozesuwokujado.pdf
- https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608bced5ce1fa---88751333372.pdf
- https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160714f1a35e78---24184460405.pdf
- http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d01a963f2e4---90060690595.pdf
- https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/hv2cd8h9d3ae85ruvc3qff3ud3/ruvitiviwozomeziw.pdf
- https://www.reachcast.ca/wp-content/plugins/super-forms/uploads/php/files/ca18a1106d91a4b078fc1a27e40299ec/jezila.pdf
- https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/a9009f2f21ccf26e6c81ad5ae2ece6be/75087455507.pdf
- http://aksaaydinlatma.com/img/editor/image/file/85338840353.pdf
- http://artdealer.vn/upload/fckimagesfile/be3badc9347d20323282af79402332a7.pdf
- https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/ccaf64aec4ed36841e49b39fa2390f7d/31187962340.pdf
- https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16090187dd5f84---38406327855.pdf
- https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/dcdff7b09095d986602565b20518290c/91240244844.pdf
- http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084557ea7eba---32432395183.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab054089531---11106743322.pdf
- http://year-c.com/upload_fck/file/2021-7-3/20210703074957717263.pdf
- https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/ohb805ugmp03go8hrg15ejmvg3/jewenibegesemomute.pdf
- https://soechi.net/userfiles/file/43200612160.pdf
- http://shinex-auto.com/userfiles/file/watepaka.pdf
- https://mut-zur-veraenderung-hambuch.de/userfiles/file/kuwozosegejemofo.pdf
- http://bakoca.hu/files/file/65729642163.pdf
- http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608597b373176---pulexidixibekalani.pdf
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c705e617356---11204190435.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=non+traded+reits
- 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_off0000f37d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF37D | 16792 bytes |
font_01_sfnt_off00010b94.binf9340898d4b1a98b49e672667e8b4b0fb3cb94a962cf58cde135237f369bbff7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B94 | 10172 bytes |
font_02_sfnt_off00012274.bin2c17981c473a01bb6ab9a24fde1853825f7d14f44c0ec864f094f9f1e83f44aa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12274 | 17332 bytes |
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