MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm. It contains numerous external URIs, including one pointing to a compromised WordPress upload storage, suggesting it's used to redirect users to potentially malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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://nomylo.ru/uplcv?utm_term=android+replace+dialer+app PDF link annotation
- http://konberdbio.com/upload/files/87466941064.pdfIn PDF document text
- http://e-instar.com/userfiles/file/juleguma.pdfIn PDF document text
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/16130afb471c66---48361801218.pdfIn PDF document text
- http://puzynowska-kancelaria.com/userfiles/file/pisobewivobu.pdfIn PDF document text
- http://amicissiapiemonteisa.it/userfiles/files/72181931423.pdfIn PDF document text
- https://cualuoihoanmy.com/uploads/userfiles/file/90147927197.pdfIn PDF document text
- http://corse.annuaire-regional.com/ckfinder/userfiles/files/82444256159.pdfIn PDF document text
- http://hoshitorionline.com/uploads/files/48313042994.pdfIn PDF document text
- http://hilimall.ae/uploads/files/sesevumojikatakitunepedib.pdfIn PDF document text
- https://proartgaleria.hu/files/files/padafisizelutavumenasub.pdfIn PDF document text
- http://ahdjcm.com/upload/files/lopurasafutejetege.pdfIn PDF document text
- http://s-privod.ru/userfiles/file/zejefiwi.pdfIn PDF document text
- http://diakmelo.hu/ckfinder/userfiles/files/koderuvogeba.pdfIn PDF document text
- http://kartinatv.org/uploads/files/ropimik.pdfIn PDF document text
- https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/kfhtbdr23pjc5lmdqocjmon3a3/5913626162.pdfIn PDF document text
- http://champaigncursillo.com/userfiles/file/92940694666.pdfIn PDF document text
- http://archifolder.com/userfiles/files/68555643540.pdfIn PDF document text
- http://www.village-gaulois.org/gestion/ckfinder/userfiles/files/73634627411.pdfIn PDF document text
- http://scsytech.com/upload/files/kodotobulig.pdfIn PDF document text
- http://retailcop.ca/files/49667959566.pdfIn PDF document text
- https://r4binsh4h9-att.com/contents/files/xogepegamaxad.pdfIn PDF document text
- https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/in5568qi897vc7vlcj3mmaocqb/pilisavepikorodosexuzubap.pdfIn PDF document text
- http://shepardinteriordesign.com/rw/upload/file/87314433093.pdfIn PDF document text
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/161483ea8d48d6---30954452095.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_off0000cce1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCE1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e4f8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4F8 | 10220 bytes |
SHA-256: e83485cb17cdea6b4601e241d3b413c54c0f8c3a537fee7faaf98e1e371df3c0 |
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font_02_sfnt_off0000fbe8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBE8 | 17404 bytes |
SHA-256: d1460fdbbe6d9de0434bd1a6ed1db27305a5519872c29da25b8b93795bbf99c8 |
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