MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs pointing to various websites, many of which appear to be compromised or disposable hosting. Heuristics indicate this PDF is a link farm designed to redirect users, consistent with phishing or malware distribution tactics. The ClamAV detection and ML classifier further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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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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://allytemp.ru/uplcv?utm_term=physicochemical+properties+of+protein PDF link annotation
- https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16151321b39d61---76137257963.pdfIn PDF document text
- https://pankajplast.com/ckfinder/userfiles/files/38249918895.pdfIn PDF document text
- http://sunnysolutions.it/uploads/assets/file/jakofivoxalirojora.pdfIn PDF document text
- http://clainvest.pl/userfiles/file/16975872594.pdfIn PDF document text
- https://ebal.ro/app/webroot/files/userfiles/files/sugobulumo.pdfIn PDF document text
- http://collegium-connect.nl/ckupload/files/kukumudoron.pdfIn PDF document text
- https://ngonluathan.com/images/ckeditor/files/61999923364.pdfIn PDF document text
- http://monticellotownship.org/userfiles/file/65401023706.pdfIn PDF document text
- http://henzefashion.com/userfiles/file/vavawuwofit.pdfIn PDF document text
- http://erpos.sk/data/files/vizovaperujuvutujolikopeb.pdfIn PDF document text
- http://marienoellebermond.com/img/uploaded/file/2257577183.pdfIn PDF document text
- http://petraifevronii.ru/ckfinder/userfiles/files/76259671460.pdfIn PDF document text
- https://ijacr.net/assets_admin/ckfinder/core/connector/php/uploads/files/98178181927.pdfIn PDF document text
- http://saraswatishikshamandir.com/singhania/downloads/file/75426726170.pdfIn PDF document text
- http://tonioloclaudio.it/userfiles/files/kobum.pdfIn PDF document text
- https://mwasafat.com/uploads/files/maxuvimiluzobivopovaj.pdfIn PDF document text
- https://academiesutherland.com/userfiles/file/42094101713.pdfIn PDF document text
- http://tunglamgarden.com/images/fck/file/vebub.pdfIn PDF document text
- http://z500.si/files/99450283200.pdfIn PDF document text
- http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/n01u8rh3468pt4qqcojdvlvae0/vejatolerap.pdfIn PDF document text
- https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613ce12269765---45785017584.pdfIn PDF document text
- https://conviviodihera.it/dati/upload/file/rigefemekasori.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_off00011a7c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A7C | 20444 bytes |
SHA-256: 1f49df5e4d88f3b840dfd8f5af15200f48732f9f55addccf97009c32243fae21 |
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font_01_sfnt_off00014f43.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14F43 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001675a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1675A | 10860 bytes |
SHA-256: 3c4350bb718a308638a6579782d7bd2625204086c66e8770384d81a2cef8aaa7 |
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