MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/6645311f477d367efade677fb79b0f5f/korixaxetefe.pdf In PDF document text
- https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/8ce564eebca2ded7cc0b854280092e31/84698860671.pdfIn PDF document text
- https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/32fb6b83ba77737c6fab01fc3189d509/16367197270.pdfIn PDF document text
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607afbd0a2ea3---21489664892.pdfIn PDF document text
- http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c8b13f68bc9---20140992788.pdfIn PDF document text
- http://vitali-schulz-eiskunstlaufen.de/userfiles/files/xafobilosigovatiwu.pdfIn PDF document text
- https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/f87a36cdf1dbebf4b400f641aac5b77f/28993355789.pdfIn PDF document text
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f34b22c5e0---mugusixilewovot.pdfIn PDF document text
- https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/90d9cc263a2b7b3a608a38be56fcd95c/wetarutoxalajigokirubo.pdfIn PDF document text
- http://amdind.com/userfiles/file/71416738312.pdfIn PDF document text
- http://keacg.com/upload/files/gabadizisexomatuje.pdfIn PDF document text
- http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b9bf8a3a20d---totuloxajonime.pdfIn PDF document text
- http://aggengr.com/uploads/CMS/file/62670489004.pdfIn PDF document text
- https://www.deuba.info/wp-content/plugins/super-forms/uploads/php/files/knisgq7dout444mg0s493sat85/misegawited.pdfIn PDF document text
- https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ba56737e1a9---66439469185.pdfIn PDF document text
- https://thefertilizergranulator.com/d/files/89871891437.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=how+to+read+pdf+on+laptopPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f49f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF49F | 4652 bytes |
SHA-256: ec3202c03f4564f275de46b137248ad036ccd665214276bfbd4dca84c6974662 |
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font_01_sfnt_off00010481.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10481 | 11452 bytes |
SHA-256: f412229d4cdd5b1ef34eb56dc1d75eae73aa87633f380d489d7309b74663ac24 |
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font_02_sfnt_off00012b37.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B37 | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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