MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was identified as malicious by ML classifiers and ClamAV, indicating it likely exploits PDF vulnerabilities. It functions as a link farm, directing users to numerous external URLs, some hosted on compromised WordPress sites, suggesting a phishing or malware distribution scheme. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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://cissud.it/uploads/ck_editor/files/konovuzapepibobawaje.pdf In PDF document text
- http://edu-family72.ru/content/images/uploads/file/67057019350.pdfIn PDF document text
- https://goez3.com/10005001208290177/ckfinder/userfiles/files/sasukebafeterukojexa.pdfIn PDF document text
- http://lenosada.sk/editor_uploads/files/tenedamasojewusadipe.pdfIn PDF document text
- http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed61dace51---44655176741.pdfIn PDF document text
- https://macjiboter.macjahisa.si/files/file/66760443804.pdfIn PDF document text
- https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/f81b558678972c48e355de851f7c5d1b/losazebigodaronu.pdfIn PDF document text
- http://fulns.com/uploadfile/fckedit/file/1630930806swk7.pdfIn PDF document text
- http://anhuishangbiao.com/upload_fck/file/2021-9-3/20210903031406841675.pdfIn PDF document text
- http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f973253375---3507035773.pdfIn PDF document text
- http://boletin.alicantehosteleria.com/lib/ckfinder/userfiles/files/tulemure.pdfIn PDF document text
- http://guerrazzi.info/userfiles/files/xapegavonuwarevude.pdfIn PDF document text
- http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135e68fb427b---22257523545.pdfIn PDF document text
- https://fotojursa.cz/userfiles/file/zuxirawowetoras.pdfIn PDF document text
- http://preiss.at/upload_files/files/zewiwotomun.pdfIn PDF document text
- http://domadoma.cz/userfiles/file/xasagakapezalak.pdfIn PDF document text
- http://na-bytecek.cz/UserFiles/File/nigovidebenoto.pdfIn PDF document text
- http://osingenieria.com/images/admin/file/pezujugafevute.pdfIn PDF document text
- http://first-group.kr/ckupload/files/49181953108.pdfIn PDF document text
- https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/d479f6b8b0a4e0942f73033bb9047167/94527973345.pdfIn PDF document text
- http://www.peritaonline.es/ckfinder/userfiles/files/71503671988.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=2.2+apk+geometry+dashPDF 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_off0000b3d4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3D4 | 18472 bytes |
SHA-256: 43b5e724e4da760230b9e9ee886065b86dc3e2d5919170a9a34407bb02877ff7 |
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font_01_sfnt_off0000e259.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE259 | 10892 bytes |
SHA-256: 90d8cd0ac2edd2ae05c0d3d01acf90894a279585b4635e832d368869d6001b02 |
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font_02_sfnt_off0000fb75.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB75 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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