MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. It contains a large number of external URIs, many pointing to compromised WordPress upload directories, suggesting a link farm designed to redirect users to potentially malicious sites. The presence of these links and the overall structure strongly suggest a phishing or content-luring attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9822
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://irlanc.ru/uplcv?utm_term=heartburn+in+young+adults
- https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/g8nbrc89ue8cdptujvtq81m6ks/koxoxix.pdf
- http://kulturazebrak.cz/userfiles/58687153192.pdf
- http://tiszaikaland.hu/upload/file/gopipokesadot.pdf
- https://bwawarszawa.pl/upload/file/5032654540.pdf
- http://anma.pl/anma_edytor/file/fogosodisaralonoxivepena.pdf
- https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/1a4g10csu110747dmh4sgt45b0/wojamazujebinivigal.pdf
- https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0c80a7f6feaf125d9b57acbaaddc739d/kudunisim.pdf
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/1dc86c0cdc548df4ea1ffa95010c462a/82433066968.pdf
- http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1609406f800f99---tibixolivoziwujafu.pdf
- https://mszukam.pl/dat//file/7974102291.pdf
- http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8cb95a480---86571173688.pdf
- https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/3d1ce05d16449eac68023ba28e428bff/3446430491.pdf
- https://aedwea.com/upload/foto/zukeruburikelukubatesibip.pdf
- https://thefencedocumentary.com/adminfiles/file/tugovawufenatanabawado.pdf
- https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/gg5v9n7orb8pt7sut5rbm7cv29/jawuzawe.pdf
- http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/66d35286fd269e0fb0e0fb609c250b29/53667535794.pdf
- https://arerp.kr/data/file///34097082366.pdf
- http://manninareunion2012.com/clients/0/03/03b30fdf9aaeeba733afadbef254ff7b/File/87483189254.pdf
- https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ae86c370f08---velawinevaz.pdf
- http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b08840d162b---52664103848.pdf
- http://abbwingslynnhaven.com/uploads/files/31695374819.pdf
- https://luathoanghuy.com/uploads/files/mutarafavasugataxeve.pdf
- http://beijingxinzhi.com/userfiles/file/20210513235417_240341905.pdf
- http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/7012de17d498cc993d5d57bbc1f259ef/zevetip.pdf
- http://yngc.ru/admin/ckfinder/userfiles/files/7345596169.pdf
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160aa7b889fce8---59318124482.pdf
- https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/3361f9d3af1f390261e452750952657e/budidevavogixox.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_off0000fd6c.bin45f937b9ac95d68d3d0087edc3b8c7af3ad45a5088fb089948cfa12dee9d48df |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD6C | 16536 bytes |
font_01_sfnt_off00012886.bin46c11b601eb2878a3bb53e3a8b66d7475862e68e01fcdadb8643223b66d6d6e7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12886 | 10768 bytes |
font_02_sfnt_off0001412a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1412A | 16792 bytes |
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