MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm pointing to multiple compromised WordPress sites, which in turn host other malicious PDF files. This suggests a phishing or credential harvesting campaign, likely delivered as a spearphishing attachment. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c5b85c557ae---modowodeginitidigove.pdf
- http://golfproradost.cz/webpagebuilder/ckfinder/userfiles/files/88099937534.pdf
- http://jagatjyotischool.org/jagatjyotischool/userfiles/file/simizonewanilofajuzidi.pdf
- https://baxsporthorses.nl/userfiles/file/9272648503.pdf
- https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/2rfnjnrc13c3h39anpvt7kq03l/wetozolisuz.pdf
- https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/6a20ece6885c969c530e4e84206e787e/59332136965.pdf
- http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/j0l4gvfsh6gnvbunuo84gtc7ts/91032638445.pdf
- https://myphi.biz/nbloom/fckuploads/file/55897188438.pdf
- http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/35851277816.pdf
- http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/16071c36a50635---99200503419.pdf
- http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160849c16f0539---27190492745.pdf
- https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160affb9b9210c---nipobulofug.pdf
- https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a7508d06c---lomejaxoman.pdf
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/vp788bu03hvhngdn64fq9sell3/xusigasikamufawoweparezi.pdf
- https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/hgfv8q08kv7e4o73sm96kc0oee/juvowobilisoriveb.pdf
- https://stmpallet.com/ckfinder/userfiles/files/temebovodaxofutulasazobu.pdf
- https://susta.vn/userfiles/file/miviwufapoxef.pdf
- https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/aisl369uomu7juhvdulgqa5oi1/90022888806.pdf
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/g3e65ecbhmhe4nvjcglhi44mtl/90124406576.pdf
- https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd83eebf6c---xuvotixidol.pdf
- http://birnagarcollege.in/userfiles/file/64934175018.pdf
- http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bce1850d00a---89266321866.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=wpath+letter+of+recommendation
- 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_off0000f21a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF21A | 16792 bytes |
font_01_sfnt_off00010a31.bin3d309f369757d59a9cfd859ad1477c32e73690df09eeed463fe081f12aabe6bc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A31 | 10708 bytes |
font_02_sfnt_off00012294.bin4430a4d9e3752425019d7508cbe4adb9270b275b5b36d4b6cceed01f08f66f78 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12294 | 16360 bytes |
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