MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample is a PDF containing embedded JavaScript and numerous links. Several high-severity heuristics indicate that these links point to compromised WordPress sites and are designed as a link farm, likely to distribute malware. The ClamAV detection and ML classifier further confirm its malicious nature, classifying it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
Heuristics 8
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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 http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ff7285c2994---53957320656.pdf In PDF document text
- https://cengilli.com/icerik_images/file/tezapakaxubokerexi.pdfIn PDF document text
- https://liantoong.com/archive/upload/files/52272988586.pdfIn PDF document text
- http://roxburyhs1987.com/clients/63080/File/zevewimaxomisizidigutopin.pdfIn PDF document text
- http://rama-sp.com/rama/webroot/js/ckfinder/userfiles/files/nafebibotukojudolanopo.pdfIn PDF document text
- http://cnzhongkui.com/fckeditor/editor/filemanager/connectors/php/uploads/file/27122253526.pdfIn PDF document text
- https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/objht5jgn46tt88rn5mq8bmgqg/gejimogotuvofeposobup.pdfIn PDF document text
- https://birgatour.mn/js/ckfinder/userfiles/files/bawamuwaruxefovudi.pdfIn PDF document text
- https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1d7355e964---10222992169.pdfIn PDF document text
- http://sarlampa.ru/upload_picture/45858426796.pdfIn PDF document text
- https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ba9f69c6967---45332907881.pdfIn PDF document text
- http://55pluscommunityspecialist.com/userfiles/files/sumapisesolelopofuno.pdfIn PDF document text
- https://csn-alliance.com/data/files/limadalenaf.pdfIn PDF document text
- https://leo.tw/upload/ckeditor/files/bopuf.pdfIn PDF document text
- http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607b5961235ec---83421229765.pdfIn PDF document text
- http://alliance-ltd.com/userfiles/42535499614.pdfIn PDF document text
- https://tessuno.com/upload/files/60fc686fc4b72.pdfIn PDF document text
- https://murderescape.com/wp-content/plugins/super-forms/uploads/php/files/c8f1e9f4c1753ada36e45c6e40d6340d/20080924663.pdfIn PDF document text
- https://gitteszoneklinik.dk/ckfinder/userfiles/files/64091059014.pdfIn PDF document text
- http://cardealer-space.com/js/upload/files/jujava.pdfIn PDF document text
- http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160a12d3505aa9---xadugewo.pdfIn PDF document text
- http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd9d494ac7---nopinizonofilepoti.pdfIn PDF document text
- https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/cu4lj1a93s78hg8kvm88i9icc3/dozuvew.pdfIn PDF document text
- https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/966f484c1f91d13062608d07a8413694/jozevedekabegutu.pdfIn PDF document text
- http://ambulatorioveterinariobubiniregini.eu/userfiles/files/86008911548.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=how+do+i+use+samsung+smart+tv+remotePDF link annotation
- http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/b989897cbcc35d70e4c00cbb322ebe72/8297136075.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f8f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8F4 | 16720 bytes |
SHA-256: a090ab862410fa3ca4cd074eee76cc63fd2bbd83f7ad89f175c6609f59161a77 |
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font_01_sfnt_off000124a2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x124A2 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013cb9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13CB9 | 10788 bytes |
SHA-256: 884613f339e6af2f68490d7d0a19e20b737ff13f9ce517fe7297f166822e3f3d |
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