MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code or redirecting users. The presence of numerous external URIs, many pointing to compromised WordPress upload directories, indicates a link farm designed to obscure the ultimate destination and potentially host malicious payloads. ClamAV detection and ML classification strongly support a malicious verdict.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 7
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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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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 http://nguyenxuanhuong.com/upload/files/kufarimalenut.pdf In PDF document text
- https://master.plus/wp-content/plugins/super-forms/uploads/php/files/058cd78a03dd21fff0b237df042d38aa/pusutunurudupep.pdfIn PDF document text
- http://czdashan.cn/uploadfile/file/2021082207183673499.pdfIn PDF document text
- https://cavalier-hundezucht.ch/userfiles/file/97079844977.pdfIn PDF document text
- http://langeline.com/ckeditor/upload/files/zisexolimisuxawazopukun.pdfIn PDF document text
- https://cafeau1ait.xyz/js/ckfinder/userfiles/files/43148365922.pdfIn PDF document text
- http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/k36atitk3tud0pgctm3gh21of3/9817368526.pdfIn PDF document text
- http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a335fb6f680---25879276631.pdfIn PDF document text
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/8ca048657c25674a088a800a5518493b/rakomekanefejirin.pdfIn PDF document text
- http://viettruss.com/upload/file/xozejajojemobivimudi.pdfIn PDF document text
- http://ikuma-car.com/js/upload/files/dikuliberitif.pdfIn PDF document text
- http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/2ce7ae061ea1babb2a80038703e42e0a/latomuk.pdfIn PDF document text
- https://alzubidi.com/userfiles/files/danolaliz.pdfIn PDF document text
- http://pasaru.com/upload/files/vudeviguzuganasaforagape.pdfIn PDF document text
- https://vico-inmobiliaria.com/ckfinder/userfiles/files/dodobazemutanuva.pdfIn PDF document text
- https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/b1c094baf8822d8acf2dada19124d73d/70318212350.pdfIn PDF document text
- http://mikailang.net/userfiles/file/20210721141208_1204912550.pdfIn PDF document text
- http://yasairamenbar.com/uploads/files/kebowoxivonalagivemafete.pdfIn PDF document text
- http://gemwishrs.com/ckfinder/stones/files/fopiguwutujotapufokezaki.pdfIn PDF document text
- http://soepcentrale-dekeyser.be/userfiles/file/kilevisusepulomi.pdfIn PDF document text
- https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/7d2d7529282a8f2332c8313fda8eccf7/nezovo.pdfIn PDF document text
- http://retroldn.com/userfiles/file/rikepimawadejonewifirebe.pdfIn PDF document text
- https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b05224bbbca---45459397044.pdfIn PDF document text
- http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609804776a603---buriforadenenelavuj.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=noli+me+tangere+pdf+free+download+tagalogPDF 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_off0000efae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFAE | 10736 bytes |
SHA-256: 58ac220d161489b7e6217fd04a048070094a2ec3a2a219ec018035d249b1f94b |
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font_01_sfnt_off00010823.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10823 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012035.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12035 | 19952 bytes |
SHA-256: 880ea88a4c3f6d7132983ac3f1547318c0bf1c5023bd4a371798965f10ba956d |
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