MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to compromised websites or disposable hosting, suggesting a link farm or redirection mechanism. The presence of PDF-specific heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports the attack pattern of redirecting users to potentially harmful content. No scripts were extracted, but the PDF structure itself is leveraged for malicious redirection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
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 http://greenbiotech.vn/uploads/userfiles/file/7572560525.pdf
- https://stpeterscbs.ca/ckfinder/userfiles/files/kazipunepigiwonobo.pdf
- http://preserveproperties.com/userfiles/files/39923409197.pdf
- http://valdhans.cz/userfiles/file/45143530945.pdf
- http://rejs2013.cycling-recycling.eu/imgturysta/files/11299710436.pdf
- http://ural-resyrs.ru/data/file/nosomututozekidumukexug.pdf
- http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/6sgp92d915ejplhgsur4ijo0e5/wafunovugi.pdf
- http://alrehabourhome.com/userfiles/files/10911996128.pdf
- https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160742497cef29---86380378418.pdf
- https://topclassgreenery.nl/images/file/ranupolun.pdf
- https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c120b1c55b7---2613913259.pdf
- https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/49f7kardut7dh8g31bkrnj3j5d/31105019626.pdf
- https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c888e72bd04---dalemokifedunogagupadix.pdf
- https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160ecaadb4d5d3---bozip.pdf
- http://lateonsettay-sachs.org/userfiles/file/48885759055.pdf
- https://bravo-hk.com/userfiles/file/10095590603.pdf
- http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160763e6e2da56---13217499735.pdf
- http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/silg36eb75m01i1pm39vi0k570/rivuwozeri.pdf
- https://mszukam.pl/dat//file/nubulaxuwodakosatikijexo.pdf
- https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/0ebf4c4a0a16e20a4311e930abbf20a5/43918801815.pdf
- http://rkmaster.ru/uploads/files/8433860059.pdf
- https://xn--faade-mtal-p6a3a.ch/ckfinder/userfiles/files/67269003794.pdf
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/da6b2d8213893d5c59b753f8837d1c58/4639631961.pdf
- http://yer-krasnodar.ru/ckfinder/userfiles/files/95837391952.pdf
- https://mayphotocopydogia.com/upload/files/titosabazirenedu.pdf
- http://whuntex.ru/userfiles/file/22182404730.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=repeated+addition+arrays+worksheets+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_off0000c35f.binba66fb215ae225e511eb478ad3cf9724b4375c18e66cd0316ee996fa7b57002d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC35F | 10888 bytes |
font_01_sfnt_off0000dc96.bin8c3a4da2e14bbabf1c9460d819a353ec2786285abe07c59d13c30112f490e643 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC96 | 18008 bytes |
font_02_sfnt_off00010af9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10AF9 | 16792 bytes |
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