MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it impersonates a document signing service and contains a link farm pointing to multiple external PDF files, likely serving as a lure for further malicious content. The presence of numerous URLs hosted on compromised CMS uploads and disposable domains reinforces the phishing and malicious distribution pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 7
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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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Document signing service impersonation lure medium SE_DOCUSIGN_LUREDocument impersonates DocuSign, Adobe Sign, or a similar signing service in a signing-request context
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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://holocaustresearch.pl/nowy/photo/file/tevuxidowuwa.pdf
- https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/b95da3461b88956b84567dbd4c12f41e/gapadaboja.pdf
- https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b770b80b577---malegozotufe.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d751c4d246---55472751369.pdf
- https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/1bd58b9aaf36b8e0dd7c985dc64e9800/xugama.pdf
- https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16093cdaf2673c---pitizogatodekunusogadute.pdf
- http://namuvaldymas.lt/userfiles/file/62371272103.pdf
- http://szao-spb.ru/images/news/file/62123157915.pdf
- https://burstallconrad.com/editor_files/file/wuronatu.pdf
- http://www.anjhimayath.com/upload/file/dubedusitubosenekoj.pdf
- https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/cb053536caa26f612f1301215f6aabaf/44290826933.pdf
- http://dui-antidote.com/images/userfiles/file/86290999866.pdf
- http://ed-web.cz/userfilesfile/forugunokuv.pdf
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/4a8bef854990f5f4bdf6e0ab23dbcac0/fimosevozole.pdf
- https://autotrans911.com/thread/admin/uploads/file/10240012385.pdf
- http://www.sphotobooth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f61fe4c8e1---39670346658.pdf
- http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609889a702a9e---10500197284.pdf
- http://msamerica.net/clients/873634/File/wiwafel.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cb31178c890---fixekolotusutitelojeloti.pdf
- http://robertfeinberglaw.com/images/edit_images/file/katasodesanur.pdf
- https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/42af31d7e93f703f2eff309783f65672/lekaroliburijagutulo.pdf
- https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/b59344dfb574b8965649dd187aa27433/54840246132.pdf
- https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0228caf6f2---zafuzituz.pdf
- http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a26ae07b791---pofazekegu.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=how+to+make+a+fillable+pdf+form
- 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_off0000d2fd.bine7eca7e2c1d1de9427f8e7b2117a30d67771ca54e23c15727b47286c444578d3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD2FD | 10696 bytes |
font_01_sfnt_off0000eb44.bin32aea696cc3139b9bf7607fb759d25a621ce6c52b095ff61600366cb96808a9e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB44 | 16528 bytes |
font_02_sfnt_off00011609.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11609 | 16792 bytes |
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