MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, presenting numerous URLs that point to other PDF files, likely as part of a phishing or malware distribution scheme. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this, suggesting an attempt to obscure the true malicious destination through compromised websites and disposable hosting.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
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://pobierzplik.pl/uploads/files/kuvuxasef.pdf In PDF document text
- http://ttlh.vn/storage/ckfinder/files/56113464854.pdfIn PDF document text
- https://kiptep.ru/file/zexagenatijofegejaf.pdfIn PDF document text
- https://glamweddingdesign.com/userfiles/file/wululilivoju.pdfIn PDF document text
- http://tt-ural.su/admin/ckfinder/userfiles/files/tedusutimivabememom.pdfIn PDF document text
- http://vkts.se/userfiles/file/miwuwu.pdfIn PDF document text
- http://betheaskssd.com/flash/betheaskssd.com/file/bigesojifowozumonawifelu.pdfIn PDF document text
- http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/1612f8e02082d1---90860320716.pdfIn PDF document text
- http://lexprikson.com/admin/style/images/userfiles/file/wusekivujefasi.pdfIn PDF document text
- https://awinresource.com/uploadfile/file/48275485278.pdfIn PDF document text
- https://cornerstonelaw.eu/userfiles/file/81013622429.pdfIn PDF document text
- https://ibericadearmerias.com/file/75851121636.pdfIn PDF document text
- https://doanhnghiepvietnam.org/img_duhoc/files/38136802159.pdfIn PDF document text
- http://igigeothermal.jp/userfiles/file/jojivapu.pdfIn PDF document text
- https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/c15240edeff974b2b2dc0686ec262782/34966515057.pdfIn PDF document text
- http://www.yoko-ono.be/images/userfiles/file/7055179546.pdfIn PDF document text
- https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/c1ee53984dc6c2dc040ea75e3596a843/73888631196.pdfIn PDF document text
- https://currenwatch.myhost360.cn/file/upload/files/09-06-23-53-18-26.pdfIn PDF document text
- http://wenxuezj.com/images/File/94834705626.pdfIn PDF document text
- https://hkbca.org/UploadFiles/file/20210908010916186.pdfIn PDF document text
- https://ijaetis.org/ckfinder/userfiles/files/pizenedarulofotanapive.pdfIn PDF document text
- http://csptech.net/admin/userfiles/file/91165171859.pdfIn PDF document text
- https://5uempat.com/contents/files/midemunugobuminujemupa.pdfIn PDF document text
- http://salman-group.com/userfiles/file/26413216829.pdfIn PDF document text
- http://www.darvidproperty.com/news/file/14468204326.pdfIn PDF document text
- https://www.habitat-morvan.fr/ckfinder/userfiles/files/navumelokesudapesuxam.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=oceanhorn+download+apkPDF 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_off0000d586.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD586 | 10456 bytes |
SHA-256: 1c169113c70253c8f5b3d0a0a5b4db651ea22ba5318c385be0095814a7ca9e9b |
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font_01_sfnt_off0000ed37.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED37 | 18768 bytes |
SHA-256: d5fd836792bad8955876c8426947bbb48e306095f0fecdbc7ae1a4afe9d43950 |
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font_02_sfnt_off00011e4e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E4E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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