MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains a link farm with numerous URLs, many hosted on compromised or disposable domains, designed to redirect users to phishing sites. The presence of 'utm_term' parameters suggests an attempt to track user engagement with these lures.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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=coronary+artery+bypass+graft+surgery+pdf
- https://ratosatu.com/contents/files/79403442648.pdf
- https://wsbtitan.com/images/file/16381753976.pdf
- http://ebsenglish.net/_UploadFile/Images/file/90222437796.pdf
- http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606c73b41ca8d---jazawowatesotu.pdf
- http://skkouty.cz/ckfinder/userfiles/files/38095882791.pdf
- http://jerseybankruptcylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/8218789384.pdf
- http://www.photonics-science.com/ckfinder/userfiles/files/xulenegelaravoxobonopet.pdf
- https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/mn76kf7c66mpinibquie91aba9/76956550185.pdf
- https://seeyounow.net/userfiles/file/63022090207.pdf
- http://yuanjen.com/ckfinder/userfiles/files/91704536289.pdf
- http://women-for-marriage.com/ckfinder/userfiles/files/tukoxexigejut.pdf
- http://sochi-vitrazhi.ru/ckfinder/userfiles/files/88389974947.pdf
- http://w-f-l.de/user_img/file/51781830378.pdf
- https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/4f3e58547cebc803c2870b56657e99be/45137232372.pdf
- http://edgewood1962.com/clients/2/2b/2b25cacec04995aba37d275b9c35b4d1/File/numewefodidoroduxipuze.pdf
- http://pwr-tech.ru/userfiles/file/gifurubek.pdf
- https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/1df231dcbc0277fe81a5596b013ff9bd/kawuxifajulofitabofalazo.pdf
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160dbc046990a3---16820811663.pdf
- http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab698949da1---9237608981.pdf
- https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/a260114190b65d09c653cb5194ab5263/63751357135.pdf
- http://wsystem.sk/userfiles/files/15669625693.pdf
- http://alfavit.tv/userfiles/file/jexubired.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fbc8.bin57c3fb933c9682bbb2818cdcd864441aa892c8ceae0f65c943921477bf5d926d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBC8 | 17220 bytes |
font_01_sfnt_off00012878.bin038f5a226ed5aede105c43a1470cc73b7341c215a3c0ffc82b96b3f8e488dc16 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12878 | 10920 bytes |
font_02_sfnt_off0001418d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1418D | 16792 bytes |
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