MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal that the document functions as a link farm, directing users to multiple external URLs, some hosted on compromised CMS platforms. This pattern suggests an attempt to distribute phishing content or further malware payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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://archism.ru/uplcv?utm_term=precalculus+6th+edition+pdf PDF link annotation
- https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/006f6041adcc6762969b38baa42edf22/86452575960.pdfIn PDF document text
- http://osstemcardiotec.com/files/fckeditor/file/10621938761344300819f0.pdfIn PDF document text
- https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee9ef459dd---rimomoz.pdfIn PDF document text
- https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/d88h8brakfvpda7mucj3epbpo8/29090982349.pdfIn PDF document text
- http://amicissiapiemonteisa.it/userfiles/files/72181931423.pdfIn PDF document text
- http://jmestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/800191729.pdfIn PDF document text
- http://liebherr-tr.com/userfiles/file/vakuvorinewusowosiz.pdfIn PDF document text
- http://mylodge-naoshima.com/dutidijoxotodefofuzofi.pdfIn PDF document text
- http://www.colormotion.cz/UserFiles/file/sixuja.pdfIn PDF document text
- http://finpacecuador.com/userfiles/file/lokowujudoderalu.pdfIn PDF document text
- http://scbczy.cn/up_files/file/20210906_231836.pdfIn PDF document text
- https://arerp.kr/data/file///nadusuwadalewolobulikaj.pdfIn PDF document text
- http://floridare.ru/app/webroot/img/uploads/file/045912_bebosaminemedomugog.pdfIn PDF document text
- http://tpokebar.com/uploads/files/nojolugekuxopeg.pdfIn PDF document text
- http://apluskleaning.com/admin/images/file/42167041484.pdfIn PDF document text
- https://chiuman-hk.com/images/file/bibapogasetet.pdfIn PDF document text
- http://pm-ural.com/uploads/files/8395497239.pdfIn PDF document text
- http://kme-kme.cz/files/file/90089470173.pdfIn PDF document text
- http://sissonne.hu/editor_up/wezakizen.pdfIn PDF document text
- https://bokaichenyu.com/upload/files/dirajumajudumikedenimifa.pdfIn PDF document text
- http://taociren.com/upload/file/210909021319072001xpjb33fbz403.pdfIn PDF document text
- https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/edb10638c67b69ca577eaa48db511284/wutawug.pdfIn PDF document text
- 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_off0000d252.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD252 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ea69.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA69 | 10984 bytes |
SHA-256: ad3cbff7ac41004bacf769dd0d3cf057b07e6683a250cda35bb710cb5ed6ee2c |
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font_02_sfnt_off000103da.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103DA | 20624 bytes |
SHA-256: 8b607f8d62953156f87059894ab6a9c74d85fe7a9000bf9ceb5dfe1648c88a2f |
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