MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which are part of a link farm designed to host further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a phishing lure or download a secondary payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://synerhu.ru/uplcv?utm_term=windows+7+64+bit+uefi+gpt+iso+download PDF link annotation
- https://qkon.ca/images/file/6726028816.pdfIn PDF document text
- http://elitk.ru/_files/30282279573.pdfIn PDF document text
- http://bjaimama.com/data/upload/2021/09/file/202109081352086602.pdfIn PDF document text
- https://www.ijmsir.com/ckfinder/userfiles/files/fazefumoseduzekilesoma.pdfIn PDF document text
- http://familiegravesen.dk/userfiles/file/38687197660.pdfIn PDF document text
- http://bimbrlata.cz/UserFiles/File/fukasajinijivijikejaxip.pdfIn PDF document text
- http://bdsps.org/slbdavbatala/userfiles/file/sekefupejegosewezutoxifug.pdfIn PDF document text
- https://defi128.com/userfiles/files/wofuvegekijikiwexebab.pdfIn PDF document text
- http://hoya-system.com/uploads/files/202109110627244186.pdfIn PDF document text
- https://samowar.ch/upload/file/deguviselowesuzepagu.pdfIn PDF document text
- https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/22b9eb9fc6b19f85bf85e99c5cab138b/wogujujodememisubobato.pdfIn PDF document text
- https://mailing.crpm.ch/ck/ckfinder/userfiles/files/4623042451.pdfIn PDF document text
- https://westhygiene.hu/editor_up/jedenufuzuxivumodiwij.pdfIn PDF document text
- http://ergakiland.ru/files/files/felobenumulaxaga.pdfIn PDF document text
- http://plymouth-logs.co.uk/ckfinder/userfiles/files/90691962505.pdfIn PDF document text
- http://bekkercoon.ru/ckfinder/userfiles/files/42790988141.pdfIn PDF document text
- http://interfacetravels.com/app/webroot/js/ckfinder/userfiles/files/20130619261.pdfIn PDF document text
- https://almondzwealth.com/administrator/imagetemp/file/pabebixofalozidezirif.pdfIn PDF document text
- http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16132db961d852---72428578259.pdfIn PDF document text
- https://sunsoftinfoway.net/ckfinder/userfiles/files/tinekawejeburov.pdfIn PDF document text
- https://hexema.com/FCKeditor/file/matikunak.pdfIn PDF document text
- https://hmanagement.net/userfiles/file/9846964840.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_off0000be0f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE0F | 11188 bytes |
SHA-256: 11445006ba4923a69bb6aeae9fc0be3451adc7da2d9281d723e9e5b1e13b049b |
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font_01_sfnt_off0000d820.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD820 | 17440 bytes |
SHA-256: d2bf009710756e1d17378b4cae89997d1a74e676138921326a308386f55d5e3b |
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font_02_sfnt_off000105d4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105D4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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