MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains numerous links to external websites, many hosted on compromised CMS uploads or disposable domains, suggesting a link farm designed to redirect users to malicious content. The primary URL, 'https://pistant.ru/uplcv?utm_term=acer+android+tablet+user+manual', indicates a lure related to product manuals, likely to trick users into clicking through to a phishing or malware site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://pistant.ru/uplcv?utm_term=acer+android+tablet+user+manual PDF link annotation
- http://chiesamadremarsala.eu/userfiles/files/giboberekugoga.pdfIn PDF document text
- http://www.ortodonciaelisafarache.com/ckfinder/userfiles/files/xelowidajiv.pdfIn PDF document text
- http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136f34ea7728---radezeduxisilejanijuk.pdfIn PDF document text
- http://alphanaturehk.com/userfiles/file/64350900978.pdfIn PDF document text
- https://poolpoint.be/uploads/file/vesatofelinajikut.pdfIn PDF document text
- http://a-aqua.fr/ressource/site-image/files/fabumegegerilitipeda.pdfIn PDF document text
- https://dellrein.ru/content/file/tulisevulizufe.pdfIn PDF document text
- https://oykufestivali.com/ckfinder/userfiles/files/5872935989.pdfIn PDF document text
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/97ee56336ede7b1b8fb390b381399d19/38629678518.pdfIn PDF document text
- http://www.slappedtogether.com/editoruploadfiles/file/33724218057.pdfIn PDF document text
- https://fa-vietnam.com/webroot/img/files/fovenesabuxojanuzesowufon.pdfIn PDF document text
- http://chayka-svg.ru/files/21496384138.pdfIn PDF document text
- https://samirkumarpaul.com/ckfinder/userfiles/files/68235738794.pdfIn PDF document text
- http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/161563fdd50cd8---14232064509.pdfIn PDF document text
- https://anitacalderon.com/ckfinder/userfiles/files/93467843357.pdfIn PDF document text
- http://kingkady.cn/uploadfile/files/xomokow.pdfIn PDF document text
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/161465b9cf0618---64575627898.pdfIn PDF document text
- https://xn----7sbbg1ddpkdc.xn--j1amh/uploads/files/96030722726.pdfIn PDF document text
- http://studiozoppini.com/userfiles/files/84210661012.pdfIn PDF document text
- https://prcomponents.com/ckfinder/userfiles/files/99000756348.pdfIn PDF document text
- http://nct-vn.com/userfiles/file/nufuvesojidotujugojevanix.pdfIn PDF document text
- http://waycreon.net/bhaskar/yii/upload/files/muwazuwix.pdfIn PDF document text
- http://tootingtaxi.com/survey/userfiles/files/pamokajijuberube.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_off0000db86.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB86 | 17948 bytes |
SHA-256: 007eef25ef6441149669387a11e592e887a785cc3d8e08a47fe7cc17b01feafe |
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font_01_sfnt_off00010976.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10976 | 10752 bytes |
SHA-256: a8aa4799240bd0625134ec53537fa99f5daa1fe2a7db42decffe7716d615f3e4 |
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font_02_sfnt_off0001222d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1222D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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