MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URLs, many of which are hosted on compromised CMS uploads or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the PDF_URI heuristic further support the attack pattern of directing users to external, potentially harmful, sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://queure.ru/uplcv?utm_term=spanish+for+the+table
- http://otevrel.eu/ckfinder/userfiles/files/vuzumepulupi.pdf
- http://german-ex.com/images/blog/file/zadola.pdf
- http://perlawarmii.pl/userfiles/file/66521038663.pdf
- http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/16145932e2941f---55106639595.pdf
- http://wagnerpc.com/userfiles/files/wudojaxutimugiradavinugun.pdf
- http://iswii.net/ckfinder/userfiles/files/jejagapafogadakitovugu.pdf
- http://wine-paraphernalia.com/files/winep/_repo/file/tajerafod.pdf
- http://taikenplan.jp/ckfinder/userfiles/files/zufomi.pdf
- https://pgp-puh.hr/fck_media/file/wukedisixewotatevejotafa.pdf
- http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139ce7f20ad4---6139265576.pdf
- http://marklaliberte.com/fckupload/file/39104367507.pdf
- https://natyabio.com/uploadfiles/pufulakusataw.pdf
- http://eugensa.lt/app/webroot/uploads/userfiles/files/55008860695.pdf
- http://pvvc.cz/files/mifukixofofogem.pdf
- https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/k16tddrc5kh2qt0nga26euao7j/11099715679.pdf
- http://thetsaban3watnuea.com/UserFiles/file/56792999128.pdf
- http://astorandblack.net/emailer/userfiles/file/69533578848.pdf
- https://zoorichi.com/temp/fckeditor/file/jalejawisapebinifizujip.pdf
- https://sanidom.pl/img/file/23876045828.pdf
- http://quaisetoiles.fr/img_pages/file/mofagiponujavovanotujagek.pdf
- https://bvphcn.bdata.vn/upload/files/97227976074.pdf
- http://cameralehiep.com/hinhanh_fckeditor/file/bofisesenunezibekowukuro.pdf
- http://td-mg.ru/uploads/files/gonoxekibaxuwudeno.pdf
- https://cambodiadriverservice.com/userfiles/file/77733078720.pdf
- https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe876a6263---kosafada.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000bb3b.bin9aaafdee8d05fd1b5e6a396fe64ff8866ad289f50823a56c2aadb895bc5d262f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB3B | 17020 bytes |
font_01_sfnt_off0000e741.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE741 | 16792 bytes |
font_02_sfnt_off0000ff58.bine80140164920f32479a24659f1ee90e0a25044c494a8fb96b632a25096ae6cfc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF58 | 10672 bytes |
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