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, suggesting a link farm designed to redirect users to malicious content. The presence of these links indicates an attempt to facilitate phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://krisoc.ru/uplcv?utm_term=administra%C3%A7%C3%A3o+geral+e+p%C3%BAblica+para+concursos+pdf+download PDF link annotation
- http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b7a55e0cdc---falame.pdfIn PDF document text
- http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eff877c502---62041974588.pdfIn PDF document text
- https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611412fbdac00---vovovatojajezulibabet.pdfIn PDF document text
- https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6b2379488---80769004955.pdfIn PDF document text
- https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/a4aafcacc754758e356db996d1dad8df/dudoxusolubovawis.pdfIn PDF document text
- http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/pp7hv57lb05h1qncpgbg64h735/fewopubefalolevekovosupev.pdfIn PDF document text
- https://pmms-online.com/assets/file/katenajuxodelapeg.pdfIn PDF document text
- http://acpiindia.com/userfiles/file/tonilutevozile.pdfIn PDF document text
- https://naveenent.com/administrator/imagetemp/file/vuzarefumanuxuzadu.pdfIn PDF document text
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/afebd21119ab84afb5ce1afc18893b04/lijajazixux.pdfIn PDF document text
- http://kvrhousing.com/uploads/88304680017.pdfIn PDF document text
- https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/29dcc3d2736c40d7c0aad6a82b92dda6/wugebula.pdfIn PDF document text
- http://goodslib.com/userfiles/files/4538038094.pdfIn PDF document text
- https://genericdiabeticteststrips.com/userfiles/files/modixopopafot.pdfIn PDF document text
- https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/201b7pqlh6hll0l1lum0o361ki/41079458460.pdfIn PDF document text
- http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cedf66b1f05---17930051227.pdfIn PDF document text
- http://www.aluvascientific.com/UserFiles/file/zuxawiguvatiduxuneg.pdfIn PDF document text
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094177a64684---sijajelasujekeranubi.pdfIn PDF document text
- https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/f9df02bfc5666ca5d56bb4ce481ace3a/1448012081.pdfIn PDF document text
- http://hkacca.com/userfiles/1614358553.pdfIn PDF document text
- http://secureyun.cn/uploadfile/file///2021070813464764.pdfIn PDF document text
- https://grupo-kayros.com/userfiles/file/sosisam.pdfIn PDF document text
- https://teenvolunteerhouston.org/wp-content/plugins/super-forms/uploads/php/files/17b1c36309f5dc32c1ddea3933c22b22/60517264721.pdfIn PDF document text
- https://supermagnum-bg.com/userfiles/file/9214740371.pdfIn PDF document text
- http://gpmpoolandspa.com/ckfinder/userfiles/files/gelatakul.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_off0000fd84.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD84 | 11852 bytes |
SHA-256: cf5a4d685cd304ab5ae8c374bab30999e7f19522893afd8659a70c6f9a97b80e |
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font_01_sfnt_off0001189d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1189D | 21708 bytes |
SHA-256: 474669f250033bec24f1a281b5aabda07c768fb63fad73689a2928df6234f5a5 |
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font_02_sfnt_off00014e96.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14E96 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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