MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links pointing to various websites, many of which are hosted on compromised WordPress installations. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics indicate a pattern of link farming on potentially compromised infrastructure. The ML classifier and ClamAV detection further support its malicious nature, likely as a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9924
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 http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9749ca753---69830081879.pdf
- https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc4674e171d---69995480675.pdf
- http://geologocarmignani.com/userfiles/files/54636669370.pdf
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608280e950fb7---xokab.pdf
- https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/vgu27uuiu31gd0shqifhto5cf6/58871833920.pdf
- http://kojeneckezbozi.eu/userfiles/file/xaxed.pdf
- https://xn----7sbbjg7ctfs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9f2f916383c63a37e51deea123596972/3638456469.pdf
- https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/qq1rfagtrlqchm26i4klovgrij/83669838893.pdf
- https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/35dcc0b9a45f279813112640c4362604/gesugekotigekusenez.pdf
- https://5uempat.com/contents//files/lofivo.pdf
- https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/191gmabgr7k81ihsskd5uen8p9/repikelepa.pdf
- http://dentherapia.hu/files/file/38003640589.pdf
- http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3fe36a3082---tumovirojitenunemosopin.pdf
- https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/d7cd4788c0a6c884f7c34cbd7a762fcd/37620185825.pdf
- https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/00m2gfu316etk2vpe8s3d3q33k/33077042067.pdf
- http://schmetterlingsgaerten.de/file/95940534180.pdf
- https://prana.video/wp-content/plugins/super-forms/uploads/php/files/oqhjca7arji376ita80bclfmj8/53786064970.pdf
- https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/7561d84ddc322f63aa3ed76e6381e5f7/86587071200.pdf
- https://autotrans911.com/thread/admin/uploads/file/54020479424.pdf
- http://bbpcosmetics.com/admin/upFiles/2021-5/file/peworuraxewevereze.pdf
- https://fertilizerproductionprocess.com/d/files/fanijapomaxedejope.pdf
- http://oio.cn/uploadfiles/files/kizevebikemomiwafiv.pdf
- http://primebrokeragetx.com/ckfinder/userfiles/files/96013152698.pdf
- http://mashtalkandil.com/userfiles/file/5963303231.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=standard+form+of+the+linear+equation
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ed9a.bin96d8ba25bce632f9cc496ceb5cc9d5b5bf802ebfaf076bdd5df1c3365c75e7a7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED9A | 17452 bytes |
font_01_sfnt_off00011bbe.bin6837ee99da1cfa68f94ef018c04fdd60fabdc9fe8736d2b9f864bffa6d12f4ec |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11BBE | 10772 bytes |
font_02_sfnt_off00013410.bin325c5f5cda05429ae92d15c23118ca1b8712e485108c584e1e30b0ff615913b7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13410 | 16084 bytes |
font_03_sfnt_off0001493c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1493C | 16792 bytes |
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