MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous links pointing to compromised WordPress sites, which in turn host other PDF files. This indicates a link farm designed to distribute malicious content, likely for phishing or malware delivery. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9874
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/c2f1ksk34oig0kv337jkpr1oo0/2205879106.pdf
- https://humicdp.com/uploads/2021-06-17/images/files/24586698080.pdf
- https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be3e6d1e107---dezux.pdf
- https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/297r33gqckml1262qkt37pmtp1/gerexedakim.pdf
- https://melz-feu.ru/upload/30133728646.pdf
- http://www.predia.cz/userfiles/file/39320109827.pdf
- http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/ocr4ae99mq9io4867c73r34cj0/tomenonaluvu.pdf
- http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfc5740d09d---3031289954.pdf
- http://docando.es/js/ckfinder/userfiles/files/dosuvufisosujavilibifow.pdf
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/e82f93cc4814cd55196a774c3388123a/63228760674.pdf
- https://faktxeber.ru/resimler/files/19378126236.pdf
- http://dui-antidote.com/images/userfiles/file/petofogafovovigolagoxaba.pdf
- https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bdd5e70fba3---16623480415.pdf
- https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/16078b7ec2ed78---nufopuxazugasekiwaveg.pdf
- http://nadiadsa.org/userfiles/file/xuzimumigerirujinas.pdf
- http://broorybulldogs.com/clients/33993/File/43555256627.pdf
- http://cnhhgj.com/upfiles/userfiles/file/47185715707.pdf
- https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/6afc9d68634986a8614c5a177f1d7bef/nutus.pdf
- https://xn--z4qq44i.tw/upload/actfiles/newojaxigunitumewuxitib.pdf
- http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607c277598e2f---petisa.pdf
- http://dhs1959reunion.com/clients/871764/File/jubaj.pdf
- http://cesurmakina.com/userfiles/file/48233327928.pdf
- http://architects-desk.com/uploadsfile/17317032070.pdf
- https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1c85565bcc---74050318884.pdf
- https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/khnges1n9fuu1rvlisva9mplu7/26307234780.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=example+of+a+nigerian+3+course+meal
- 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_off00011761.bina41cff13c479f8b57b466959126fa6720567328c522ef6dd673d1b3fad9cff79 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11761 | 17688 bytes |
font_01_sfnt_off00014568.binc026a52f2e71ec12ce7b0fdedbd4992a10723ae7cc595e8382a6094beb39cce5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14568 | 11080 bytes |
font_02_sfnt_off00015f3b.bin0c133022d1e9883d2ff7035cf84f1fa0be9cfa0d671266bc5a940283bc0f9855 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15F3B | 16376 bytes |
font_03_sfnt_off00017563.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17563 | 16792 bytes |
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