MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. Heuristics indicate the document contains a link farm pointing to compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of multiple PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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 http://cableesmaltado.com/d/files/24987788683.pdf In PDF document text
- http://scro.ru/pic/file/52200850171.pdfIn PDF document text
- http://yonseri.org/userfiles/files/31519466330.pdfIn PDF document text
- http://traktorpulling.de/ablage/userfiles/files/2304956565.pdfIn PDF document text
- https://syntellect.ru/Repository/file/xikoxuxaxali.pdfIn PDF document text
- https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/ccd2fd4a8fabc506df0cc35c86747732/kixefizezaralumurow.pdfIn PDF document text
- https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/d0e9958524b5d3c170deec5861f94e96/zewokabiwunogumus.pdfIn PDF document text
- http://sithome.com/upfiles/file/20210904085800.pdfIn PDF document text
- http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137f3ea67f57---kepidebubeso.pdfIn PDF document text
- http://ck-kutnahora.cz/gais/image/file/tenapikitukiram.pdfIn PDF document text
- http://lavalnerina.it/userfiles/file/mewerejafelazefi.pdfIn PDF document text
- http://cuspsurgeons.com/userfiles/file/73421217436.pdfIn PDF document text
- http://thailaundry.com/imgUpload/files/6565828354.pdfIn PDF document text
- http://aa-nusd.jp/33165372116.pdfIn PDF document text
- http://sns.hu/_user/file/74705782906.pdfIn PDF document text
- https://baxsporthorses.com/userfiles/file/83551119246.pdfIn PDF document text
- http://pusheng168.com/uploadfiles/20210912115758.pdfIn PDF document text
- http://www.vljainandco.com/userfiles/files/dokorokukubo.pdfIn PDF document text
- http://cana.vn/uploads/userfiles/file/75956684052.pdfIn PDF document text
- http://avon-bratislava.com/files/files/93752735960.pdfIn PDF document text
- http://donghotam.com/luutru/files/sodakebe.pdfIn PDF document text
- http://xn--ob0bjxt9h99icicrvkksa421cwwp7hiv4d6a.com/ckfinder/userfiles/files/nufasowetutidowi.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=how+to+install+work+email+on+androidPDF link annotation
- 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_off0000c06f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC06F | 17084 bytes |
SHA-256: 703dd5f3b9682bc7047ab6ba29cb882a232f68aa611a24a13a44b50f8aa2dee1 |
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font_01_sfnt_off0000ec94.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC94 | 10580 bytes |
SHA-256: 9e177b638781ede49db9892aa61c00d8d361c674dffdb4e8d65065896bfe4f1d |
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font_02_sfnt_off000104be.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104BE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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