MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains multiple links to potentially compromised websites, including one that hosts a PDF file within a form-builder plugin. The 'SE_CALLBACK_LURE' heuristic indicates the document's content is designed to prompt the user to call a phone number, a common tactic in callback phishing and tech-support scams. No scripts were extracted, but the presence of embedded URLs and the callback lure strongly suggest a phishing attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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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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 https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/s73ikcahkpe5tr88ggg2e2uftj/17729800029.pdf
- http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2b71981a20---31535404498.pdf
- http://geoodwierty.pl/files/file/25204595548.pdf
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d9f2fc9fdd---69796645235.pdf
- http://dieta-plus.pl/userfiles/file/gikitekabamubilitumibu.pdf
- https://bookatowncar.com/userfiles/file/52202245615.pdf
- http://tkhomedeco.com/assets/uploads/ckedit/files/20210622195443.pdf
- http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7b1b96dc5---tivetanogofubuvolup.pdf
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab0f914cc25---wokesarepuluruk.pdf
- https://aimhc.com/userfiles/file/vozojawafosopulolam.pdf
- http://www.alexgis.com/siteuploads/editorimg/file/kugulobafasu.pdf
- https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/o2o40chvhmj364di16ejgrsbg2/musikewepop.pdf
- https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/xisefifoda.pdf
- http://tai-yang.tw/taiyang/upload/file/lowonazoxowevuri.pdf
- http://curry-box-deluxe.de/userfiles/file/9305752110.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=north+andover+ma+registry+of+deeds
- 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_off0000dec2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEC2 | 16792 bytes |
font_01_sfnt_off0000f6d4.bin736e4d7f1c02cd611117d3fce444695ef76b4dc81e654ec2009d19b0d3b81fdf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6D4 | 17484 bytes |
font_02_sfnt_off000124ff.binefc130ce319b4aa64626f9f1b3fcae81824d2e5db95190cbedd7fd28c3b784cf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x124FF | 10912 bytes |
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