MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites, suggesting a link farm or SEO poisoning attack. The presence of these links and the nature of the heuristic firings strongly indicate a malicious document designed to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/02b8e2c509aa5e78e7affe83f709a604/98671211194.pdf
- https://liantoong.com/archive/upload/files/nudef.pdf
- http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608df66b01a14---51052971157.pdf
- http://hakkabrothers.com/userfiles/file///46863637800.pdf
- https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/csu93usr3t91uoif9sbbcq0l52/96399140590.pdf
- http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609286fb9238d---befinulufokidowobene.pdf
- http://bjhtdszdh.com/v15/Upload/file/20215221245216646.pdf
- http://inglewoodreunion.com/clients/68690/File/41351790318.pdf
- http://1960whs.com/clients/7/73/73384dfd0d582a2861cf356c55c3c578/File/pokanod.pdf
- http://altelaw.com/uploads/image/file/togexumara.pdf
- http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/4c5edff831179f15c31a5cfba4e37d89/bobomategun.pdf
- http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609bdc751ad8f---96690081904.pdf
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c94b8515a4---73284237367.pdf
- https://armagedonspedycja.pl/files/file/54517386514.pdf
- http://pajurioverslas.lt/ckfinder/userfiles/files/6106119074.pdf
- http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a94bfff152e---90596710571.pdf
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f1dbcd3dfc---49665501024.pdf
- http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609b8f0852d92---pipogol.pdf
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16090cea8e2721---leziseginufivogejovewe.pdf
- https://arerp.kr/data/file///48436256228.pdf
- https://vietfun.com.vn/wp-content/plugins/super-forms/uploads/php/files/p68giss0b6440e89hi0r3l2d6u/74212321907.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=microelectronic+circuits+sedra+smith+6th+edition+solution+pdf+free+download
- 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_off00026abb.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x26ABB | 16792 bytes |
font_01_sfnt_off000282d2.bin41aba7877eff56dd4dff2f95a9a4e98bc580edfa43d9e68c15ee92aff3a926d8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x282D2 | 11232 bytes |
font_02_sfnt_off00029d07.bin3060168eefa9db56c2a94af99a8b2159a0c11e0b7a1808bb9bf22eea5b7b4296 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x29D07 | 20428 bytes |
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