MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=spider+man+far+from+home+mp4+free+download PDF link annotation
- https://aduanaldelvalle.com/userfiles/file/patananaxizadudorone.pdfIn PDF document text
- http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16072628eb56ca---tunibozukebeda.pdfIn PDF document text
- http://gayaarchi.com/userfiles/file/20210602095536.pdfIn PDF document text
- https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/470b18014d5841393e68647f481b6a85/tupozojovotebar.pdfIn PDF document text
- https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16094a062d544f---maxam.pdfIn PDF document text
- http://absolutelyneon.com/userfiles/file/92017478784.pdfIn PDF document text
- http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc342a32638---pezupesovifewanexatigujub.pdfIn PDF document text
- http://strahovka66.ru/userfiles/file/xekibuwidose.pdfIn PDF document text
- https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/4a3c5e32f10489fa6bdb54e2bcc2d0c0/lujazoxopezigepijowu.pdfIn PDF document text
- https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/8vojfdcfnj65q454q9drt8g1aa/32301933707.pdfIn PDF document text
- https://herfection.tw/upload/ckfinder_temp/files/20210619194926.pdfIn PDF document text
- http://provia-events.de/pics/fotos/1/file/vipefog.pdfIn PDF document text
- https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/27010ba4bc1999b998b901c87bbf2264/51336384850.pdfIn PDF document text
- http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096dcee72af3---90052170860.pdfIn PDF document text
- http://vetranhtuong.info/luutru/files/10840539976.pdfIn PDF document text
- https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae7dd467bc9---vopuwemafajotubusupakaw.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cfb3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFB3 | 5388 bytes |
SHA-256: 12bf61fbe11f8ea6252ebcdc7b26d28c89bfc00b1054845d04d24b23d104fe9e |
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font_01_sfnt_off0000e1e7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1E7 | 2116 bytes |
SHA-256: 1f756b46481ac718095810e133e155ec1caf818687d25c20e8b002f727d713c7 |
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font_02_sfnt_off0000eb93.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB93 | 19424 bytes |
SHA-256: 3444666e0e2f37219740f9459d947aaa6291dee77cc1ed4bb4d99e0889044666 |
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