MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a large number of embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the nature of the PDF and the embedded URLs strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://crysiq.ru/uplcv?utm_term=how+to+see+private+instagram+photos+and+videos
- https://virtualpulse.eu/UserFiles/file/vumomoxixafubut.pdf
- http://vpecargo.com/userfiles/file/diriludemojexiwi.pdf
- https://coffotea.com/uploads/files/202109151610385128.pdf
- https://nezrenpin.com/calisma2/files/uploads/65775591101.pdf
- https://nissanzorba.ro/ckeditor/ckfinder/userfiles/files/33410316196.pdf
- http://autosoftware.company/autoresponders_images/files/97321145795.pdf
- http://rem-proekt.com/f/file/74297725168.pdf
- http://kusistoconstruction.com/userfiles/file/79979408216.pdf
- http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f547102f05---rufazefiwebovusivusofuge.pdf
- https://ou-ravda.com/ckfinder/userfiles/files/gixewedirujewuri.pdf
- http://avalon-essenzen.at/userfiles/file/ruxebifodorapowolusa.pdf
- http://jadeite.ru/images/file/dakixajufigoxu.pdf
- http://aasghsflqsae.handylover.com/upload/files/5211250214.pdf
- http://turchifiltri.com/userfiles/files/99945014829.pdf
- http://tuanlongland.com/upload/files/37523052111.pdf
- http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613175d04f0e0---9164659316.pdf
- https://autoandtruckrepair.net/nbloom/fckuploads/file/govivodivak.pdf
- http://petra-koparki.pl/Upload/file/35695253854.pdf
- https://begili.com/uploads/image/files/jutijowejufesitovu.pdf
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/vo15pedojhisjo4t1noeqlqcu0/xiwavedekavojabo.pdf
- https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/01d9d085d193018d142bd43f7952cb6b/97533366771.pdf
- https://xn--23-6kci4asohe8k.xn--p1ai/userfiles/file/lisolakorezeru.pdf
- 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_off0000ae6b.bin7fed32a09fa3c9903b4dda6e9d7eab1eff7c3e07aaebaeed7c9e18ed302c07c0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE6B | 14236 bytes |
font_01_sfnt_off0000d187.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD187 | 16792 bytes |
font_02_sfnt_off0000e99e.bin7a06974f8a3ac3449d3df5e3595bdf93b83f3302e866af7a21147f13cd7aae5b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE99E | 10936 bytes |
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