MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. It contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, but the presence of multiple external URIs and compromised CMS upload links indicates a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://inwebjor.ru/uplcv?utm_term=name+the+hormone+secreted+by+posterior+pituitary+gland
- https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1faf014643---53606890274.pdf
- http://dmhu.eu/uploads/uplib/file/kogomezudawaperagug.pdf
- http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d60aa6be4bd---xekigetakinureg.pdf
- http://upoart.com/ckfinder/userfiles/files/31021337679.pdf
- https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd93592ced---50755867803.pdf
- http://edelstahl-berlin.de/media/file/15104115588.pdf
- https://doellefjelde-mussemarked.dk/images/newsmail/file/47280218376.pdf
- http://meble-tk.pl/userfiles/file/kepigetoberujitafaruw.pdf
- https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/s34apd80s1fjul4baqvhu9d97b/87309267306.pdf
- https://alamansyria.com/userfiles/file/88389084885.pdf
- https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/48dd25c474e2b0afd4660234c6538673/ragufasizukavefedo.pdf
- http://lab4050.com/upload/editor/file/97081453897.pdf
- http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c62ed46831d---fawukanomop.pdf
- http://ducthoaudio.com/upload/files/ridat.pdf
- https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b28c647eca3---numifuj.pdf
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160ac29f5e159d---95743562769.pdf
- http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/00998803acede08094048cb62d9f66ce/wonegusog.pdf
- http://bioscipublisher.com/files/upfiles/file/senufapinajababazodowizit.pdf
- https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/6fhvtui203up8pereft8s7lpo2/52656089808.pdf
- http://ahdongjiu.com/upload_fck/file/2021-6-22/20210622155724959486.pdf
- http://cmrivestimenti.com/userfiles/files/67042407886.pdf
- https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/160c3a186341c4---33077083542.pdf
- https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/8e42cc14326c5ab99b2a372fc355e695/gezunelobibutepovowe.pdf
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16098fbdc755a8---71253284758.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_off0000f574.bin6c89555e78a12d6e42dc04632b40ff6c214e4b834b554ae76d78618a96b721da |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF574 | 16872 bytes |
font_01_sfnt_off00012152.binb6d706ac60535c782ed9307df22729fec109ba8ef313d57af2d44003ee771f99 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12152 | 11292 bytes |
font_02_sfnt_off00013b43.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13B43 | 16792 bytes |
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