MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing and trojan threat. The document contains numerous external links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to distribute malicious content. The presence of a 'Password-protected archive handoff' heuristic indicates the document likely instructs the user to open a password-protected file, a common tactic to evade initial security scans.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 7
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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=muscular+system+quiz+pdf
- http://dientrotiendathc.com/media/ftp/file/jumobolexapuvumo.pdf
- https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b35af70dfad9397c6755beb6bc7d60bc/57421859853.pdf
- http://sghscsjamarai.org/guruhargobind/userfiles/file/rexoduvute.pdf
- http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608c9cc06e0e1---24799141076.pdf
- https://all-new-wow.com/upload/files/gexupep.pdf
- http://stellarvvv.ru/ckfinder/userfiles/files/xeradaj.pdf
- http://dwhs79.com/clients/15834/File/saxizegefugazozunepamegef.pdf
- https://calendarsunrooms.com/userfiles/files/vosutoze.pdf
- http://gchs1969.com/clients/867877/File/vidonali.pdf
- https://ivanda-commerce.hr/userfiles/file/32763888636.pdf
- http://methese.com/upload/files/84813257576.pdf
- https://kebecelectrique.com/upload/editor/file/rovebenaragudosita.pdf
- https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6376ba1b4---tirariwasenupide.pdf
- https://preprodpcb.com/userfiles/files/dipomolivixomutap.pdf
- http://geologocarmignani.com/userfiles/files/84320465633.pdf
- https://drsubhashawale.com/ckfinder/userfiles/files/77610447021.pdf
- http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/1bb33ea77da727099783446982e57e97/50351061436.pdf
- https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/c204c6166067192160601ddf18f59d6b/70049810571.pdf
- http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a85ee2b18e5---furowogunefomivibol.pdf
- http://thankschicken.com/uploads/files/pofuxorute.pdf
- https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b332e94e31---87153830036.pdf
- https://shibbirs.com/media/files/77433044845.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_off0000bce1.bin7d957a65c86cd405648f6590da8e7bb5d163221ace63b8ede121494b80192bc0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBCE1 | 16252 bytes |
font_01_sfnt_off0000e66e.bin3082ad5413775da84bbf13909017faf3642aeb4d89f457450256c164396f0ded |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE66E | 10968 bytes |
font_02_sfnt_off0000ffce.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFCE | 16792 bytes |
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