MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple external URLs, some hosted on compromised CMS platforms. The presence of numerous embedded URLs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest the document's primary purpose is to redirect users to potentially harmful websites.
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://crysiq.ru/uplcv?utm_term=testing+the+difference+between+two+means+dependent+samples
- http://sutinlawkrabi.com/ckfinder/userfiles/files/58540066007.pdf
- https://milliondollardesiclub.com/upload_files/featured/files/gizoburepumavej.pdf
- https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/66ee45e2c590726c3a0cfa1b408e1c97/furorunamozalupopiva.pdf
- http://www.farmaciapenil.es/userfiles/files/80683635042.pdf
- http://devveb.net/userfiles/file/nenilesuzuluxebol.pdf
- http://meditopthailand.com/file/wegizutewalixeroriwozede.pdf
- http://bjbtrh.com/files/pic/file/83733246945.pdf
- http://dotykbylinky.sk/_subory/subory/96449047285.pdf
- http://muaah.ca/userfiles/files/97807352712.pdf
- http://china-shengbang.com/upload_fck/file/2021-9-20/20210920202825133797.pdf
- http://drukarnia-skawina.pl/app/webroot/media/files/99199805390.pdf
- http://metafelix.it/userfiles/files/36325798882.pdf
- http://mobiliteit.nu/files/31776460194.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a7831b78f3---bosinite.pdf
- https://agrando.cz/files/file/88156856470.pdf
- https://liantoong.com/archive/upload/files/karoziwevim.pdf
- http://www.tecs4.com/intranet/ckfinder/userfiles/files/zefidero.pdf
- http://notarius.jurist-info.ru/uploads/news/fckeditor/file/lawedovopiwejodadij.pdf
- https://visualmotion.nl/uploads/file/62843958493.pdf
- https://ajansnigde.com/resimler/files/7217795064.pdf
- https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/ec5bc87eefe7f161327b7314fac829f5/pizudonusejixawewitigaxiz.pdf
- https://gs-hemeringen.de/ablage/userfiles/files/nikabufirutupadotipig.pdf
- http://balbu.hu/uploads/news/file/55293636535.pdf
- http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134e6f4df458---munifot.pdf
- http://falerisztika.hu/tmp/wexutalesaz.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_off0000bde6.bin55f9232c205fa719ccef446424cf747a5f211234c498406627d71518dcc8accb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBDE6 | 18268 bytes |
font_01_sfnt_off0000ec0d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC0D | 16792 bytes |
font_02_sfnt_off00010424.bin1d04d708cc11b8374080e999a5c4f26faaa1bccd20790940339db3b8018a947f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10424 | 11256 bytes |
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