MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs and links to compromised CMS upload storage, suggesting it is used as a link farm to redirect users to potentially malicious sites. The PDF structure and embedded links point towards a phishing or malware distribution campaign.
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://coretry.ru/uplcv?utm_term=commensalism+in+bacteria PDF link annotation
- https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/h5llge2hi0dn40f5p6n39hiqpp/sajekisuxanujepulaxifa.pdfIn PDF document text
- https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/517405634eac945772a912b36476834e/9327062661.pdfIn PDF document text
- http://humanitool.ru/userfiles/file/pipalupimetu.pdfIn PDF document text
- https://divinenine.net/userfiles/file/35467862135.pdfIn PDF document text
- http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075d93dbf15b---20607327277.pdfIn PDF document text
- http://flywings.sk/UserFiles/file/97210192704.pdfIn PDF document text
- http://omonetach.pl/foto/ilustracje/file/55245532230.pdfIn PDF document text
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/65da8019feaad6dad7e358054312a92a/11649252430.pdfIn PDF document text
- https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c84e40846b---10796732786.pdfIn PDF document text
- http://studiotravenzolo.it/userfiles/files/23921301873.pdfIn PDF document text
- https://abofahed.com/userfiles/file/71415570984.pdfIn PDF document text
- https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb1a3ee3856---92194228010.pdfIn PDF document text
- https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a9287773566---lebajepugopugop.pdfIn PDF document text
- https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/pu522oapkjdj0uau63p07iqjjl/45364588272.pdfIn PDF document text
- http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7616be41d---73531773821.pdfIn PDF document text
- http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160ab1937dd075---27332834995.pdfIn PDF document text
- http://michianaorchidsociety.org/clients/2/28/2832e32407c795c8d28ffe68102aa18e/File/60752811047.pdfIn PDF document text
- https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/7fd4332332c37b2acf4ed0913a425384/fogafapedevoji.pdfIn 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://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_off000149aa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x149AA | 10560 bytes |
SHA-256: 3e3247854adfcf0a9b9a69137b8333421d5d2fe9a0205116d0c5724f8ceefa94 |
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font_01_sfnt_off000161bd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x161BD | 18100 bytes |
SHA-256: 7aa2e546f3bd77c028ce922a0a0193d0a8e044b68ff6c5564c3bc9d886d0dc29 |
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font_02_sfnt_off000191d6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x191D6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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