MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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=prime+video+android+tv PDF link annotation
- http://kayapalinakliyat.net/file/bukewovemulegobef.pdfIn PDF document text
- http://tichdiem.surecare.vn/uploads/userfiles/file/tijadakofapo.pdfIn PDF document text
- http://theprofitnesstrainers.com/userfiles/file/20953135885.pdfIn PDF document text
- http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161316a117b43a---wuwit.pdfIn PDF document text
- https://5703n1n6999-6a55.com/contents/files/xuzekupobazovamakupul.pdfIn PDF document text
- https://istanbularicilikfestivali.com/upload/ckfinder/files/zasarowuzetavevu.pdfIn PDF document text
- http://shopgraeagle.com/ckeditor/uploads/files/tikodixazama.pdfIn PDF document text
- https://watfordfairtrade.org/app/webroot/img/files/gorozowozozegu.pdfIn PDF document text
- https://beta.nhatthiengroup.com/files/uploaded/files/32611404902.pdfIn PDF document text
- https://forumsevens.com/images/file/dijitagulizo.pdfIn PDF document text
- http://abw10thstreetne.com/uploads/files/62620966246.pdfIn PDF document text
- http://shrlie.com/upload_fck/file/2021-9-12/20210912111215629252.pdfIn PDF document text
- http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/161476157bd36e---jawivobemevorudulimedipo.pdfIn PDF document text
- https://yukkumpulgroup1.com/contents/files/sogeb.pdfIn PDF document text
- http://ntvietnga.com/upload/files/13201309348.pdfIn PDF document text
- http://seoulsquare.com/userfiles/file/kajiropofirim.pdfIn PDF document text
- https://afayl.com/userfiles/file/20822671140.pdfIn PDF document text
- https://adsbudget.net/userfiles/file/nosowivizotikovi.pdfIn PDF document text
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee3a257d09---fajozunerop.pdfIn PDF document text
- http://lsphc.com/userfiles/file///12212282045.pdfIn PDF document text
- http://3suntech.com/UploadFile/file/20210905120146402.pdfIn PDF document text
- http://otohyundaidanang.com/uploads/image/files/71371816896.pdfIn PDF document text
- http://lindseyderence.com/userfiles/files/90240111992.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_off0000c465.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC465 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000dc77.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC77 | 16368 bytes |
SHA-256: 9d1abe4acdd11ca4493c86d9ecb3bea894c3d607d23a8ad674a582d8e74006ec |
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font_02_sfnt_off0001069b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1069B | 10260 bytes |
SHA-256: 10ddb34a193ce81a7b792a0a178793b3e4f53ced824647349786b9a54c4ad532 |
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