MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which are hosted on disposable domains or compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. The presence of a QR code lure heuristic further suggests an attempt to trick users into visiting these sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://duet-czluchow.pl/userfiles/file/sozapojagatozubinenepibu.pdf
- http://elcolono.net/userfiles/files/92686663579.pdf
- https://autoskola-scp.com/files/kurimof.pdf
- http://3colorjazz.com/fckeditor/userfiles/image/81926849995.pdf
- http://baodieptailor.com/uploads/2021-09-10/images/files/muxepozakurujifowofapufot.pdf
- http://designerhouse.ru/upload/files/94485157554.pdf
- http://bibliotekaludwin.pl/img/upload/files/43063656419.pdf
- http://artdealer.vn/upload/fckimagesfile/9f8b9140d1ba60ddff8977df897150c9.pdf
- http://safarang.com/basefile/files/gebixejenazesuzusedig.pdf
- http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed70ec736c---jotaxukokunun.pdf
- http://radissonhoteltraining.com/userfiles/file/dewided.pdf
- https://hahapediatric.com/uploads/files/202109030203024779.pdf
- https://locoffice.ru/userfiles/file/204883616.pdf
- http://beijingteye.com/upload/files/1500409899.pdf
- http://oldadmin.k12cart.com/media/files/xogixilerewetujagabamasof.pdf
- https://sensiblemachines.com/ckfinder/core/connector/php/files/86721390764.pdf
- http://lifebeachvilla.com/uploads/image/files/32077245933.pdf
- https://stollerco.com/testingsites/advantage_aviation/assets/media/file/wubukegakizugosaboko.pdf
- http://savitaco.com/uploads/images/files/11751780003.pdf
- https://chulintemple.house-well.com/CKEdit/upload/files/wiwamevusuvuleji.pdf
- http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a6ed8d7d65---87449052904.pdf
- https://konchris.com/userfiles/file/1630683979.pdf
- http://lsbwg.com/ckfinder/userfiles/files/20210910/1930573589.pdf
- https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/161376f949449c---tiketudawedepufaduxoxiw.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=world+of+carrom+apk
- 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_off0000ccfc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCFC | 16792 bytes |
font_01_sfnt_off0000e50e.binfb30e537765b9ee16a2873e160371fa1a6635cd4d075021143c7f7db0014eaab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE50E | 17324 bytes |
font_02_sfnt_off000111ec.bind6853bd206366f5f9b0880792e239de86d15f3fd7c6000b77450b822feced1bc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111EC | 10272 bytes |
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