MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous external URIs and links to compromised WordPress upload storage, suggesting it functions as a link farm to distribute malicious content or phish users. The presence of embedded URLs and the nature of the heuristics indicate a likely intent to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9957
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://crewmak.ru/uplcv?utm_term=samsung+galaxy+tab+s6+teardown PDF link annotation
- https://rarahil.org.np/ckfinder/userfiles/files/tifivojuziwej.pdfIn PDF document text
- http://cn-noah.com/uploadfile/file/vamakos.pdfIn PDF document text
- http://csc020.com/userfiles/file/20210906121443_rs8g3r.pdfIn PDF document text
- http://cnzhongkui.com/fckeditor/editor/filemanager/connectors/php/uploads/file/06173612196.pdfIn PDF document text
- http://awarelaxcentrum.cz/user_files/file/21599836341.pdfIn PDF document text
- https://tagoproperties.com/ckfinder/userfiles/files/wosezexa.pdfIn PDF document text
- http://novichiha.ru/pic/file/50177316221.pdfIn PDF document text
- http://sinice-rasy.cz/files/file/30290505311.pdfIn PDF document text
- https://maurinet.com/userfiles/file/zujuxurokixisadume.pdfIn PDF document text
- http://haiqi-machine.com/d/files/serexer.pdfIn PDF document text
- https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f9b2eb69b3---18058071906.pdfIn PDF document text
- http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143480fb4ec1---88007594324.pdfIn PDF document text
- http://trust-law-firm.com/userfiles/file/20210911142932_506116834.pdfIn PDF document text
- https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/0f7df6e776bf555553bf4cc967d705a8/27905345476.pdfIn PDF document text
- http://gardens-spa.com/user_pict/file/86863192467.pdfIn PDF document text
- https://masukpt1.com/contents/files/xozotefebevesatigagosa.pdfIn PDF document text
- http://classicalgardenornaments.com/uplds/file/60035752343.pdfIn PDF document text
- https://kotata-zlin.cz/obr/clanky/file/dixexeralolofubakuwuju.pdfIn PDF document text
- https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/694564d29952048a03ee10e8cd8f5fdb/8688278680.pdfIn PDF document text
- http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132b2de46cb9---22692828991.pdfIn PDF document text
- https://ingatlansos.hu/images/userfiles/file/38360689074.pdfIn PDF document text
- http://ux-school.ru/files/files/8984055267.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://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_off0000db5e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB5E | 11284 bytes |
SHA-256: b2c2fbc7d97d177e3bc77d337ece34b9dc38a5ce3a027cc74639685c796df88f |
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font_01_sfnt_off0000f5c2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5C2 | 18148 bytes |
SHA-256: 2d5a5c7fa9d928ef25d82b31facd670acd21af55cb54ca23813a49bd93a88892 |
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font_02_sfnt_off0001251f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1251F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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