MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by multiple heuristics as containing a link farm pointing to compromised WordPress upload directories. The ML classifier and ClamAV also strongly indicated maliciousness. The presence of numerous unknown URLs suggests a phishing or malware distribution attempt, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aba260d1af5---makugeweregebiziloxa.pdf In PDF document text
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/16103dac121fd1---lejezusados.pdfIn PDF document text
- http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c30385322d9---93483759162.pdfIn PDF document text
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610901490e669---befoxev.pdfIn PDF document text
- http://sahrugs.com/userfiles/file/rukipu.pdfIn PDF document text
- https://comfortinnbarrie.com/phpsites/vertical_living/uploads/file/36643141872.pdfIn PDF document text
- https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609e6e0ba090c---vunanilesekitakemakol.pdfIn PDF document text
- http://lotusromeo.fr/app/webroot/files/userfiles/files/tanipakiwuludapofimadafu.pdfIn PDF document text
- https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16080ceaae5ffd---lagalukofopuxupuf.pdfIn PDF document text
- http://grandwatergatehotel.com/upfile_hotel/files/27907820365.pdfIn PDF document text
- https://kompaspt1.com/contents//files/xosotuzivakosagurojado.pdfIn PDF document text
- http://viermaalh.nl/Bottesteyn/Site/afbeeldingen/file/25926854199.pdfIn PDF document text
- http://wxeina.com/userfiles/files/lorasatol.pdfIn PDF document text
- http://assessmentinsight.com/ckfinder/userfiles/files/90739437366.pdfIn PDF document text
- http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/573d827b1e7d7319c4a9734ff76194cf/22729277941.pdfIn PDF document text
- http://anshan56.cn/userfiles/file/1626997504814329968.pdfIn PDF document text
- http://usmleworkout.com/files/file/80022207871.pdfIn PDF document text
- https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/4f029caa0291eb93985dd00761a5c2db/30287391849.pdfIn PDF document text
- https://brazilairporttransfers.com/ckfinder/userfiles/files/zejikiv.pdfIn PDF document text
- http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7824d2853---monofoxowetixama.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=paragraph+editing+exercises+pdfPDF 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d464.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD464 | 17384 bytes |
SHA-256: cd51c317d36f0ce42197712dbdc68a448a94e5ccf8a30d8b0c0cfc7f63b08cd2 |
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font_01_sfnt_off00010140.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10140 | 10836 bytes |
SHA-256: 1379c7d2914ba1a509aa00feaa966e612588ea7441164560301b15e92bd66f7b |
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font_02_sfnt_off00011a00.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A00 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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