MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Numerous external URLs are embedded, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The PDF structure and embedded URLs are consistent with phishing or malware distribution campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://chcial.ru/uplcv?utm_term=lady+gaga+you+give+me+a+million+reasons
- http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095726227893---pisaxuvixase.pdf
- https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/431c22a574088ae28e10ee3cbe1c5936/65877471567.pdf
- http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160776b671c4ec---8088304898.pdf
- http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608947e425bf7---76137021447.pdf
- https://pmms-online.com/assets/file/39076704848.pdf
- https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16072f82b942f8---10621833275.pdf
- https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/d122ee47da2e46b245e488c7e04f19b2/78574937382.pdf
- http://learnersdigest.org/userfiles/file/mosalelanavaw.pdf
- http://kevinmcallisterlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sulitorizofogumasu.pdf
- http://www.alexgis.com/siteuploads/editorimg/file/91202732470.pdf
- http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3176750ada---pawuki.pdf
- http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d208798cb17---39624919246.pdf
- http://hk-dcc.com/wp-content/plugins/super-forms/uploads/php/files/hjqutj17o9o77fjvv390lq5mm5/pofamiwipidenaruwol.pdf
- http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/t0h7lkqf963iifb29i0icdm6mi/mesafodivaxovuge.pdf
- http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c59f23aa03a---65764098854.pdf
- http://automsystem.com/UploadFile/file/20210502195949781.pdf
- http://ahsaipu.com/v15/Upload/file/2021510850507914.pdf
- http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097b2af81f66---jiretuwiru.pdf
- http://smn68.com/clients/75339/File/91867285115.pdf
- http://www.awakohchang.com/image/upload/File/9340210810.pdf
- http://lueckerreunion2020.com/clients/e/eb/eba09433058400eda594a485f9004317/File/lojipakufoxo.pdf
- http://sgrappresentanze.eu/userfiles/files/kenelid.pdf
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de73f19acf2---mimonibibabovinipim.pdf
- https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d339eac89c---73775860245.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_off0000f134.bin2e5c620c8187ea5f3218a840e485dacca76826f07c1af1df9bc33f9eb2e1a808 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF134 | 10728 bytes |
font_01_sfnt_off00010993.bin8cd372cac9239eb30a21462d303e0151afd8848b07ab0bba24ebc1b8e43d1626 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10993 | 18044 bytes |
font_02_sfnt_off00013757.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13757 | 16792 bytes |
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