MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It functions as a link farm, containing numerous URLs pointing to compromised websites, likely to facilitate phishing attacks or malware downloads. The presence of external URIs and links to compromised CMS uploads indicates a clear intent to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9885
Heuristics 6
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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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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://irlanc.ru/uplcv?utm_term=find+the+sample+size+using+the+range+rule+of+thumb+to+estimate+sigma
- http://bixenony.com/userfiles/files/domadezofivigu.pdf
- https://lawyerupsmart.com/tempimg/file/35784001030.pdf
- https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/878cd085f6a36ff2ce6cb43cd5ed807b/dubetanepu.pdf
- https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/3e0e484ae5821ea43d60361cb9d8305f/wovozomufezaxotovafoxi.pdf
- http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/db97caf8c1fb048b031b437f81ccfc65/6335094885.pdf
- https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/04f7e870569670f813bc652dc280283f/30075733527.pdf
- https://www.swissfillon.com/wp-content/plugins/super-forms/uploads/php/files/5b0e924d4f5596e196787da33b2b5966/21952041397.pdf
- https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/d5kthfnitm65kilug550injpo1/13816792447.pdf
- http://velkoobchod-man.eu/ckfinder/userfiles/files/masinatigejabemef.pdf
- http://backupcenters.com/userfiles/file/69026185870.pdf
- http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3f62b57fa9---31721060934.pdf
- http://csc028.com/userfiles/file/20210610024435_kl8dmg.pdf
- http://hanhthien.net/uploads/file/bidiralivimimogabigamek.pdf
- https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/0edaab786dace95fc8535029c81d5e2c/fikinodibekanudirexixiwam.pdf
- https://hgb.se/filer/file/99816127477.pdf
- http://lt101shop.com/userfiles/files/pubadupexatibitopav.pdf
- https://ludifrance.fr/userfiles/file/60103251448.pdf
- https://alajuusa.eemedia/contents/file/fajirizejiposuxiwas.pdf
- https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160944294e05f0---44217663567.pdf
- http://akgikorea.com/file_upload/fck_upfile/file/nitedivipi.pdf
- http://arcomproltd.com/userfiles/file/zakarixaxusa.pdf
- https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c27ada5bbbb---govoxekubapulevasopef.pdf
- http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cdb26e9872f---65019064785.pdf
- http://kopdesign.nl/userfiles/file/misinaxajini.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000105d1.bin3109ddebd81c18ea5887a293adf66df6aeffa952337d944e01cfc8869002e515 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105D1 | 19224 bytes |
font_01_sfnt_off00013987.bin325c5f5cda05429ae92d15c23118ca1b8712e485108c584e1e30b0ff615913b7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13987 | 16084 bytes |
font_02_sfnt_off00014eb3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14EB3 | 16792 bytes |
font_03_sfnt_off000166ca.bin0ec7a95dbf93b67371413f710ee6e4ef0d2ebd3713203b50a5ab2da327e8afda |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x166CA | 11220 bytes |
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