MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as a malicious PDF by ClamAV and an ML classifier. It contains embedded JavaScript, which is often used to execute malicious actions or redirect users. The PDF also functions as a link farm, pointing to multiple URLs hosted on compromised WordPress sites and disposable domains, suggesting an attempt to distribute phishing content or further malware stages.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
Heuristics 7
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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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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://zjqzzx.com/uploadfile/file/2021052700025673499.pdf
- http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160807071e163e---lasadufijululapigibibamu.pdf
- http://gloucesterclassof81.com/clients/23558/File/vibafome.pdf
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/4d1f94d4abb9d95ee4354d65c5c77d37/15090922310.pdf
- http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f955f30d02---94836553410.pdf
- http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/f420f5ede4b4e79b38c1cd0476ba19a7/16447417847.pdf
- https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/1ef3437edb9c342c95ca25493f9de049/10641020127.pdf
- http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160a3e3e2ceabb---78494252114.pdf
- http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091899abf55e---forefunapupikazakubixo.pdf
- https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d44cc14e7d---51728346309.pdf
- https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a83ac6a28be---segijumagukus.pdf
- https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/f8a6eeb5c1d192ed9d9f7a4ab7f9b6c7/fijasajilituwobebe.pdf
- https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/4hgf5u0c042kk8889bktuep7um/68622924587.pdf
- https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/7e43872f863d6f273a30f684c0efa75c/92828354653.pdf
- https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/5c3ad82288713b76895fc9ef2d7a5ec9/57593909632.pdf
- http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c989b143b0f---41151726273.pdf
- https://bmw-zona.ru/uploads/file/rimudumezik.pdf
- http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608f540362e9c---tamizimadavugem.pdf
- https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/db0cbda8f19a13e62d1f36a5c4917233/dudubukavewapexaxe.pdf
- https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609ddc292499b---firokuvusotesanawusazet.pdf
- https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16071ebdd846ae---nesaparaxoki.pdf
- http://maduraicaterers.com/app/webroot/js/ckfinder/userfiles/files/75799968372.pdf
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609f05684a2f9---30390238423.pdf
- https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/160831c508e58f---71045891844.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=normal+apical+pulse
- 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_off00014830.bin5917219b1d544aea340e05079348169896bb22b9072514d6120456b9deacc78a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14830 | 16528 bytes |
font_01_sfnt_off000172fd.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x172FD | 16792 bytes |
font_02_sfnt_off00018b14.bin3d75a81fe79bb53c3b9c665eaa0d564814bcb32684879ff4ecf590e33cf28454 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18B14 | 10412 bytes |
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