MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting a phishing or malware distribution campaign. The presence of external URIs and link farms indicates an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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://infrive.ru/uplcv?utm_term=pwc+numerical+reasoning+test+pdf PDF link annotation
- http://sireny.net/share/files/fugipowarufijaga.pdfIn PDF document text
- https://jnvhardoi.org/ckfinder/userfiles/files/vogubesutajikoxiz.pdfIn PDF document text
- https://plasy.com/uploads/file/50347001514.pdfIn PDF document text
- http://tfforming.ru/d/files/23606293837.pdfIn PDF document text
- https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/31c7ff34c0f0c5ddadd78b23439c62bc/62469303234.pdfIn PDF document text
- https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6b097baeed---50365195519.pdfIn PDF document text
- https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/f9b5a28d5a84e0fdeb77bba2a75c0698/55877894497.pdfIn PDF document text
- http://www.annaleehuber.com/content_files/file/bikutenefafelubis.pdfIn PDF document text
- http://grafordexstudents.com/clients/0/05/05b3dbe7dd9dc6f92b523d2b721f2ffd/File/66103257851.pdfIn PDF document text
- https://agentcctv.com/userfiles/file/bewobigowex.pdfIn PDF document text
- https://bio86.net/fichiers/96672441806.pdfIn PDF document text
- http://niestachow.pl/data/aktualnosci_imgs/file/zunopisejow.pdfIn PDF document text
- https://almuhja.net/ckfinder/userfiles/files/simaperewa.pdfIn PDF document text
- http://drironcat.com/images/file/budanafagiwogenoka.pdfIn PDF document text
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609b5b5902799---bifanugesinirijerasavu.pdfIn PDF document text
- https://bakwanudang.com/contents//files/jofer.pdfIn PDF document text
- https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/e2b2db07e57f385ed1a52499e1bc34be/kadegosofel.pdfIn PDF document text
- https://vinniescustoms.com/userfiles/files/15497640184.pdfIn PDF document text
- http://dieta-plus.pl/userfiles/file/86305968715.pdfIn PDF document text
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/161005e10a8dde---28673362795.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_off00010368.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10368 | 17120 bytes |
SHA-256: 7b42b6f30e71b7491dc96503ab3f4d176c77014e40a0222de7c188f08cab6f23 |
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font_01_sfnt_off00012fba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FBA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000147d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x147D1 | 11152 bytes |
SHA-256: 3342a289746354106aad16aa6642511ce6ff06264dadb0e95bb5c1f60a32c999 |
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