MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious File
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a link farm pointing to multiple PDF files hosted on compromised WordPress sites, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the overall structure point towards an attempt to trick users into downloading and executing further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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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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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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://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8a74d9aec9992fa5402897f2320b4f0f/gitebo.pdf
- https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/075639d43a8808f898bc54d223defadf/dinepevotexizodi.pdf
- http://brenno-tojestto.pl/userfiles/file/wawiwi.pdf
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b2563b0c4d6---56274261786.pdf
- https://foxtailmag.net/wp-content/plugins/super-forms/uploads/php/files/20d866e7737b6b94eae6a3c3c102fd0a/63096119503.pdf
- http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfd4ba782c3---boxalalezaziripawule.pdf
- https://www.myosiaffiliate.com/199trust/img/file/30681638726.pdf
- http://aelma.com/sites/default/userfiles/file/rezakigezutukobimegada.pdf
- http://cecev.com/stockages/files/kexujoresorifuf.pdf
- http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b538dacaa4---kosamifokipubuxu.pdf
- http://anhuifan.com/upload_fck/file/2021-5-14/20210514130341158597.pdf
- https://advantagelic.com/singhania/downloads/file/99463354082.pdf
- https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/5e8a3e7010e0c9ad2028fd8891ced822/485012198.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3a3851cd87---60084120031.pdf
- http://mosvag.ru/img/lib/file/6953573465.pdf
- https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/a8t3rnodke2de34g0iilt66bks/rebelo.pdf
- https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/70d9f01393926f87d4dbb94cb694ad3b/59872399465.pdf
- http://seventyfirstclassof69.com/clients/60772/File/86207933606.pdf
- https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/04b7dc5ad3cf68a9517c80dd6d630b39/30965068810.pdf
- https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607b0b0b7d6ad---45932766264.pdf
- https://familienbilstrup.dk/userfiles/file/97745711362.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=what+do+you+call+a+person+who+answers+phones
- 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_off00010a98.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A98 | 16792 bytes |
font_01_sfnt_off000122af.bin04359e8da1ad367c4cebd7131d6dbb4a9421a0fceb61a58b469ce35dd92927ce |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122AF | 10812 bytes |
font_02_sfnt_off00013bb1.bin80814f8012a5953afda0706b20ed18db870644bfe147660e4cc8f359a392b3b5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13BB1 | 17936 bytes |
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