MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm pointing to multiple compromised websites, a common tactic for distributing malware or conducting phishing. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the presence of numerous unknown URLs strongly suggest this malicious intent. ClamAV detection further confirms its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/200d7b3442c3d819f7f189a46880c685/kivokufesir.pdf
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160c42a851b44d---16838515920.pdf
- http://palenice.net/obrazky_clanky/file/lipebatusi.pdf
- http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160b2611757ee5---fotikor.pdf
- https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/da53f67fb92a93606e49c0d05a1e06b4/gipepem.pdf
- https://cvsc.co/userfiles/file/zipoxak.pdf
- https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/314f526f9f2e33c60fd4f62919ad0906/50683255852.pdf
- https://aimhc.com/userfiles/file/33537796731.pdf
- https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/a2006bc5de739596acffbac410dfddc4/wusivanewal.pdf
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a23cda8577d---78301230423.pdf
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608f011aad33d---kebaxemifujiviwifujaw.pdf
- https://bilegt.mn/userfiles/files/84136283426.pdf
- https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607c21a381685---2854886235.pdf
- http://afslab.asia/upload/files/57232162391.pdf
- http://incucinaconalberta.com/userfiles/files/84192175909.pdf
- http://kayamedbursa.com/userfiles/file/gasekabutemadivajufer.pdf
- https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/21f0f3b8c0a779c5506d86ec0c5a8270/35645417711.pdf
- http://skupka54.ru/upload/m/66158686759.pdf
- https://prana.video/wp-content/plugins/super-forms/uploads/php/files/9bcfcjr2ph7ec8qj54elg49jb0/funona.pdf
- https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/ikk3333630akeeng4t9bppnf90/19351176243.pdf
- http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607965bd3d6dd---78181647640.pdf
- https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/uunbsu8npsp58ebeped0eioc00/67786739384.pdf
- https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd6a87fcf0---80769577653.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=how+to+get+your+chlorine+level+down
- 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_off0000ee97.bin2a8d4c3eee47a6788adbc0bcbf2bf5bf1f8a948cc7bd64bc8e7e062f7ba89d0c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE97 | 16396 bytes |
font_01_sfnt_off00011904.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11904 | 16792 bytes |
font_02_sfnt_off0001311b.binf91964d58929766967e49c56b91d5a494625da44347c2adee1607cfe5eec9b86 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1311B | 10676 bytes |
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