MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to potentially compromised WordPress upload storage. The presence of a 'download button' lure and a 'callback lure' suggests a phishing or tech-support scam, aiming to trick users into downloading further malicious content or engaging with an attacker.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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 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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/99b2bf9f2d1689c4a5dc038e5fb40427/50618738179.pdf
- http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/1608939d439eb8---8964616390.pdf
- https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/pv6tiqkqukvav24dvjqidenu1g/33988879818.pdf
- https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/e81c1ffb72ab43e51ba34f66f6bf8d63/zukefegepudogokubaganap.pdf
- https://acryl-bg.com/userfiles/file/9945305669.pdf
- http://urbanconstructions.org/images/uploadedimages/file/77191648037.pdf
- http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4795a30b19---tumanoridoviv.pdf
- https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/08e74839e2234c40cd4073094213b4ba/30987383753.pdf
- https://vestol.bg/files/file/65686047885.pdf
- http://svaz-podnikani.cz/files/file/jofof.pdf
- http://elcampoeco.org/FCKeditor/file/berux.pdf
- http://metaglas.kr/userData/board/file/84219907741.pdf
- http://sun-green.be/ckfinder/userfiles/files/dovubaxomonu.pdf
- https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607c1d97897b2---zedurijonizurokizovit.pdf
- http://atenngo.com/admin/sites/site/documents/pefikurenakoxobidibago.pdf
- http://moyamoya.center/images/hand_uploaded/files/73461733534.pdf
- https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb351df2eea---verugelarepazide.pdf
- http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160daa1e09b866---xezaj.pdf
- https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/igu402jekcb3i568k9u81gus3c/tonoluruzefarode.pdf
- https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/3f2e6da6597675280a3ff798202500eb/wuxajubemutalulave.pdf
- http://mikailang.net/userfiles/file/20210508200836_1180912357.pdf
- https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/3998bc7bf7f0c6433d208b5c0c2273d9/lutafenebegulo.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=quick+reference+navigation+rules+pdf
- 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_off0000fd49.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD49 | 16792 bytes |
font_01_sfnt_off00011560.binc65cee3232ad1a2de50107f2f823b177316c6018fb595c40712389283fb8db45 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11560 | 11112 bytes |
font_02_sfnt_off00012f5b.binf880d569f60f81d46a18bdb915edb41936ac1d06f4226c718499624dc8c8dede |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F5B | 17536 bytes |
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