MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of 'utm_term' parameters in some URLs further supports a phishing or SEO manipulation attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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 https://crewmak.ru/uplcv?utm_term=how+to+transfer+old+android+to+new+android
- https://www.newhorizonscrisiscenter.org/ckfinder/userfiles/files/tibilajukidumivujilokan.pdf
- http://ultrabeauty-ff.ru/userfiles/file/35138652501.pdf
- https://mwasafat.com/uploads/files/97498662621.pdf
- http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1612edcd75bd87---54449520022.pdf
- http://flyingkirin.com/uploadfiles/file/04071815522.pdf
- http://modero.vn/upload/files/44866060655.pdf
- https://www.institutvzdelavani.cz/files/92097508016.pdf
- https://truckforceone.eu/upload/editor/file/41118783394.pdf
- https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/l8oaa30u2485qhupeeotbrn990/dumeguxazom.pdf
- https://ienter.bg/files/10706074183.pdf
- http://techbis.pl/files/file/53194779164.pdf
- https://melz-feu.ru/upload/sisis.pdf
- http://saconsultancy.com/userfiles/file/wutunajiwedun.pdf
- https://sindhuinvestment.com/ckfinder/userfiles/files/72394829129.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161416f123d31d---sajidusolibunididetogi.pdf
- https://phukienbep.net/media/files/faraluvajowupasewapu.pdf
- http://zhymwz.com/upfile/file/85880412847.pdf
- https://sukhayurveda.in/userfiles/file/woxirilobokuwefow.pdf
- http://kursadowicz.pl/Upload/file/naxasibefuniluke.pdf
- http://khachsansapa.vn/webroot/img/files/texexej.pdf
- https://turkeyinsurance.info/images/file/11501371081.pdf
- https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/7b369acd65ae1d01e17d71a08ba511ac/3880299980.pdf
- http://prospekt-rostov.ru/ckfinder/userfiles/files/61294032111.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_off0000c760.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC760 | 16792 bytes |
font_01_sfnt_off0000df72.bin3ab7835b02506924b48f14a23707621af6b05f4887e23b6d609b217010e2095d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF72 | 16692 bytes |
font_02_sfnt_off00010a81.binb87d0db6a7f2b378926e8104aed368dee41f60f4491eaed1f07b97996388f63b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A81 | 10424 bytes |
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