MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to potentially compromised websites, suggesting a phishing or malware distribution scheme. The presence of PDF link farm heuristics further supports the attack pattern of directing users to external, potentially malicious, resources.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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 http://thanuyentea.com/ckfinder/userfiles/files/ronodubenegutezagux.pdf In PDF document text
- http://diakmelo.hu/ckfinder/userfiles/files/kopobikaretolubat.pdfIn PDF document text
- http://strandedtattoo.net/file/4907563278.pdfIn PDF document text
- http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133aec1f1698---zujolulilegorokawi.pdfIn PDF document text
- http://abwvictory.com/uploads/files/26257753833.pdfIn PDF document text
- http://halanmilk.com/upload/files/zasadota.pdfIn PDF document text
- http://yavuzselimvakfi.org/resimler/site/files/pamajabibujurexukarezab.pdfIn PDF document text
- http://nocleginaplus.pl/uploads/userfiles/files/38450368809.pdfIn PDF document text
- https://promise-land.com/upload/file/gekovavijigasumutemoku.pdfIn PDF document text
- http://weforyou.it/userfiles/files/99866769794.pdfIn PDF document text
- http://fcv-bo.org/data/fcv-bo/userfiles/file/27547760352.pdfIn PDF document text
- http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16133203aa60c3---wugawewaxikinumebun.pdfIn PDF document text
- https://ozmutludokum.com/userfiles/file/50313229994.pdfIn PDF document text
- https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613169978b3b0---43493501477.pdfIn PDF document text
- https://ijacr.net/assets_admin/ckfinder/core/connector/php/uploads/files/50410356424.pdfIn PDF document text
- http://iseveranscopy.com/upload/editor/file/bijifilujewanapipa.pdfIn PDF document text
- http://pegasomeeting.medcoast.net/ckfinder/userfiles/files/ratozomavana.pdfIn PDF document text
- http://ore-processing.ru/d/files/86535083494.pdfIn PDF document text
- http://hwayoung.kr/upfile/files/40340431330.pdfIn PDF document text
- http://enewind.com/pliki/file/jugikaxiziligenetarus.pdfIn PDF document text
- http://computerdoki.hu/user/file/27795698318.pdfIn PDF document text
- http://pincesorvarshop.hu/editor_up/vonemurepotowolokor.pdfIn PDF document text
- http://ana-jsc.com/upload/files/30827960979.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=hellbound+heart+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_off0000eca3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xECA3 | 18324 bytes |
SHA-256: 443f07fae61634efdc1672584434ce0564e11a42202225d616f3589aa2a4fdca |
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font_01_sfnt_off00011cdc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11CDC | 10568 bytes |
SHA-256: 2c92662f97f7a715e808fdc3011496ff74b64e671695646c79e781d9a901bf9d |
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font_02_sfnt_off000134a1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x134A1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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