MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to multiple compromised websites, likely for credential harvesting or further malware distribution. The document body, though heavily obfuscated, appears to be a lure related to a scientific search term.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://synerhu.ru/uplcv?utm_term=iodine+trifluoride+lewis+structure PDF link annotation
- https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/33760464b2717360e04d4cb6279132ad/96995975251.pdfIn PDF document text
- https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/15a2c3323b05615559bfef4191d6fd98/gajururabogeluje.pdfIn PDF document text
- https://www.proctoloji.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0b9b366cd---74852686890.pdfIn PDF document text
- https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/edfb608a9fcc52d45b573fb8131d0b42/42685881006.pdfIn PDF document text
- https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/0qii11mrv24ibpsmhmg82l65a1/37118075800.pdfIn PDF document text
- http://ibb-online.ru/f/file/buzekujudo.pdfIn PDF document text
- https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/449d67c9baa507d6bde3e05116160590/47289451521.pdfIn PDF document text
- http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a716e4392d1---biwiposamu.pdfIn PDF document text
- https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160c2729f6a111---vazivoweregerika.pdfIn PDF document text
- https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160842d0b98734---81044475291.pdfIn PDF document text
- https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/f435592cffa7986ab35a8afda867178b/xidafejibir.pdfIn PDF document text
- http://firanywiktoria.pl/uploads/editor/file/30338473168.pdfIn PDF document text
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/1363953b0dc2f38f982ba89789e325a7/46938719287.pdfIn PDF document text
- https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/9mim0lvi0cfopt013thcf4apc2/18495433427.pdfIn PDF document text
- https://csn-alliance.com/data/files/5555845817.pdfIn PDF document text
- http://zabradli-znerezu.cz/userfiles/file/nozolusonejegizeru.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010c71.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C71 | 4832 bytes |
SHA-256: 2165ad417530477905d1b052c71dd595aedcae5a3acd6abce310b126e552b17c |
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font_01_sfnt_off00011d06.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D06 | 11528 bytes |
SHA-256: 102b6feeb5445f7fac08cb0da74d2dbab61a586c73db908b7be849f119d90fdf |
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