MALICIOUS
156
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 malware distribution attempt. It contains numerous links to external websites, many hosted on 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 external links and the overall heuristic firings point to a phishing or malware delivery scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9946
Heuristics 6
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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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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://synerhu.ru/uplcv?utm_term=linear+programming+lecture+notes+pdf
- https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/4v975qs7sn2r5r7ofved02aanf/54123552160.pdf
- http://charivne.info/images/file/33887002007.pdf
- http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607591f101b3b---67023139306.pdf
- https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/uul51n1fppmhtdemb683dfq5u2/61090398641.pdf
- https://foxtailmag.net/wp-content/plugins/super-forms/uploads/php/files/a3adb06c3f620e67af84c750fb5cd2b2/78313990834.pdf
- http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/7f65968df6285a5398a2499016b2929f/jutexekezatulejixuf.pdf
- https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/41b2a1535f42aa2f524c41e098b6179e/fixefitimetanurupew.pdf
- http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a905ec52e---79085786932.pdf
- https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/c46e76c19d6066817eb97c11e5ae4986/kanaxorutexaserazun.pdf
- https://roc.mn/uploads/files/46245514000.pdf
- https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160869ea259b31---96250049731.pdf
- https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/k86k5m5ci8pujs8glh789dsta5/nusoxojigowufasipipuwup.pdf
- http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af64753ee79---tuwunogedewibas.pdf
- http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b3eeb22c9e4---dusotilij.pdf
- http://jjinline.org/file_upload/file/89550314373.pdf
- http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/16080b3c1ed5a3---86827281660.pdf
- http://paulbwatkinslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/93177615925.pdf
- https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16078b243c4873---nomakufigagepisedosilewa.pdf
- http://beijinghuojia.cn/userfiles/file/18131090506.pdf
- http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/16081dbe0c6477---56988547927.pdf
- http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607960479bbe8---nopoveka.pdf
- https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/46bf1e9c10b9ba5edf3a1bf27689eca9/17471016797.pdf
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/365523db50f1b4b3397eb722252e40e0/11696073747.pdf
- https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080da3b579f6---mojuxusexena.pdf
- https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/75bb9bad82600f5d6662bb049d29e31e/nozaratibiveji.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_off0000df35.bin06127a0b735b780ae0937199cb9c91181fce6524d1aa37e07b28045a2b9047a4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF35 | 16420 bytes |
font_01_sfnt_off00010a4b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A4B | 16792 bytes |
font_02_sfnt_off00012262.binbf433b04c9d45160b6a479537dc3ea237286c02fcae51d95f2cecc7bfa40ceff |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12262 | 11020 bytes |
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