MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal the PDF acts as a link farm, directing users to multiple external URLs, many of which are hosted on compromised CMS uploads or disposable domains. The presence of 'utm_term' parameters suggests a phishing or spam campaign aimed at driving traffic to these malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://krisoc.ru/uplcv?utm_term=moto+870+snapdragon
- https://faktxeber.com/resimler/files/virixusegeribewewuf.pdf
- https://solturism.ro/images/file/dupunonubozi.pdf
- http://cuathepvangohaiduong.com/images/ckeditor/files/gusugemotomokoribiweza.pdf
- http://smenergy.kr/uploaded/file/6020626461432687d2eca.pdf
- http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613523116a318---75159240181.pdf
- http://marcus-1.com/FileData/ckfinder/files/20210909_1CDE1C832B90A976.pdf
- http://tumwebthailand.com/ckfinder/userfiles/files/josadogujot.pdf
- https://alkirbilaw.com/userfiles/files/44521797379.pdf
- http://www.jysunshine-hotel.com/up_files/file/vevetugepafineromapibe.pdf
- http://parentini.it/userfiles/files/govapifiwefupudelefu.pdf
- https://mut-zur-veraenderung-hambuch.de/userfiles/file/sasadotisaz.pdf
- https://arbormaster.net/uploads/files/zuteviwo.pdf
- http://sooam.com/files/fckeditor/file/557214621613e8d55287f2.pdf
- http://patanjali.zohukum.com/ckfinder/userfiles/files/seziwoxukitepinaxebev.pdf
- http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/161350857269d8---75056911673.pdf
- http://labradory.pl/file/xiresakinijapoxeriki.pdf
- https://edgecs.com/documents/80827151195.pdf
- http://designklasse.de/ckfinder/userfiles/files/70990196852.pdf
- https://gulf-rope.com/images/bulk_images/files/fuwiduxavasila.pdf
- http://papinchess.ru/userfiles/file/tizogidozapuruxak.pdf
- http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/16140af0b5955d---nikasiwilolixamopogevep.pdf
- http://gdfsztal.com/uploadfile/files/84732650665.pdf
- http://goodwill.pl/userfiles/file/jerixavuwuma.pdf
- https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/at2mnc1jf3uo38s560jr2g96d1/vozifetipujalerivegixo.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_off0000ba53.binf085d75b0bd7e0d8737eaad85b9e0de368a2c28657a0ca0dfd28c33279d2c802 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBA53 | 10668 bytes |
font_01_sfnt_off0000d2b7.bin30cab1a6a111a91879e6246a4e2a7442b804adeecc48cccb8904918a3ad486f2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD2B7 | 16852 bytes |
font_02_sfnt_off0000fe3f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE3F | 16792 bytes |
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