MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users to potentially malicious sites. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a deliberate attempt to obscure the true destination by using many distinct, low-reputation hosts.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://chcial.ru/uplcv?utm_term=removing+red+wine+from+sofa
- https://tempatpasang.com/contents//files/bixugivu.pdf
- http://steps4cancer.org/clients/a/a7/a78c374070a178914b502abaf3db82b8/File/lomijanunesixatotavu.pdf
- https://martensmgt.com/business_school/uploads/file/warezu.pdf
- https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611e448a93760---videtakolugalixurebuvuwu.pdf
- http://akinmedikal.com/uploads/file/97654958383.pdf
- https://tecnicadovolante.com/images/file/xepatiletemetovozeteka.pdf
- https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/o97tlhfoqe9l03le9oqt94lf20/sivolilubawefaxafopupema.pdf
- https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/427097ea58f1a89d6dee1b1eb89896d0/jibolotef.pdf
- http://tdvvietnam.vn/webroot/img/files/85138816483.pdf
- https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c526e4110d7---73862151142.pdf
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608453e4af3c1---78535933140.pdf
- https://gotamsui.com/ck_imgs/files/23614542114.pdf
- http://steelfurniturecn.com/d/files/5336904000.pdf
- http://hurtglass.pl/upload/file/4130422687.pdf
- https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/3b0473d9b01db510ade0fe25cb8d508f/malofelaroxepatenaki.pdf
- https://robotics-institute.com/wp-content/plugins/super-forms/uploads/php/files/b83o4f1q4m9vhoju2gjsvtuk4h/jukodovajegu.pdf
- http://aelma.com/sites/default/userfiles/file/59269590563.pdf
- https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/224badac21e6fb95f76291556444aeb5/makuwekuvuketuxenezikijot.pdf
- http://sosnovgeo.ru/userfiles/file/dekurejalolazuzubaj.pdf
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/60fjqqtcq8tu9jh6k4gnmub1l4/16141506144.pdf
- http://falegnameriacastiglione.it/userfiles/files/7782373961.pdf
- http://files.ibiza-ferien.de/file/mojetiri.pdf
- https://eminencesolutions.in/resources/userfiles/file/77557540361.pdf
- http://ventima.ru/userfiles/file/99123388254.pdf
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160e6c34c980ff---zijetapo.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_off0000e1fa.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1FA | 16792 bytes |
font_01_sfnt_off0000fa11.bin6ffa922017f31c7d895662f5a039a32c3ccdc22a015c3d88d45a72019a01c1d8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA11 | 10752 bytes |
font_02_sfnt_off0001129c.binf8c32c69c7cf526e0a9060aafc8c3d10f56df46b3b8dec31cb4d6e48b4c85239 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1129C | 16980 bytes |
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