MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of malware. The document contains a link farm pointing to numerous PDF files hosted on compromised WordPress sites, suggesting a distribution mechanism for malicious content. The presence of external URIs and link farms indicates an attempt to redirect the user to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/2bpljkh00akrfue9b8nvtf9p95/58395953398.pdf
- https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/ncg33phf9vb5jeidbranphtbi5/wetifona.pdf
- https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/fa720b745d951cde68dd2c8d221a8973/xejonovadenebekal.pdf
- http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608633716b5bd---tutebumegezovotepaxosixu.pdf
- https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/q87812ko7ul9aot8b0c5f4ut9d/553461412.pdf
- http://www.uniformsolutionsforyou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca9364089b---dupavajemopama.pdf
- http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4cb44eef3---xasemanitakurevonewede.pdf
- https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/23icmfnhng079rurlbeen8ddsa/liwupapujewam.pdf
- https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a7bcae368a---liderutupexopozilovuj.pdf
- https://hiampelectric.com/wp-content/plugins/super-forms/uploads/php/files/8f32331b22a0d2dbebebfdc4bee7a46e/bebibimodifu.pdf
- https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/81c53f734547b8bd452c54257fc9e994/29390908150.pdf
- https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/nc0boo59rkijol8ita4lkbhh8b/kujipobarodiliguxizaw.pdf
- http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077b7d58dedb---vogoporetepufiserezuju.pdf
- https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/40a9afeddc3d91679361c4cebda45208/pogafevipa.pdf
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16075939bc70e0---76144758626.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=arcore+for+all+android+devices
- 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://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000df89.binaa7e3a0b017e6ec143f20bd236152f2528c8cba09ebf8edc38ef24aabe51789d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF89 | 5064 bytes |
font_01_sfnt_off0000f0da.bindd609fc64676970f5b9c655043261d102088931c7c4d77d162b0d5404663d2c1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0DA | 11328 bytes |
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