MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs that point to compromised CMS upload storage and disposable hosting, suggesting it functions as a link farm to distribute further malicious content. The presence of these links and the overall structure strongly indicate a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://datong-travel.tw/upload/ckeditor/files/20210730185119.pdf In PDF document text
- http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073c2ca861ed---26528170135.pdfIn PDF document text
- https://t2sc.me/userfiles/60387704380.pdfIn PDF document text
- http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607055ab4725d---romalikaraniresaputulera.pdfIn PDF document text
- https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bbf9a92e43---53730719397.pdfIn PDF document text
- https://henklinders.nl/henklinders/upload/files/56118903232.pdfIn PDF document text
- https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/thd42nicor0rcg0eei79hsscdr/28774316951.pdfIn PDF document text
- https://aiaciran.org/cache/fck_files/file/siworexumazepa.pdfIn PDF document text
- https://ndmoyun.com/calisma2/files/uploads/44899424898.pdfIn PDF document text
- http://files.ibiza-ferien.de/file/5035654379.pdfIn PDF document text
- https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/fc60f5e008e235a55d324c3300c40577/8286406700.pdfIn PDF document text
- http://daming-school.com/userfiles/file/venutezafu.pdfIn PDF document text
- http://elitvorota.ru/f/file/75607444310.pdfIn PDF document text
- https://nbcmedia.vn/ckfinder/userfiles/files/kunosufimedaku.pdfIn PDF document text
- https://publicbridge.pl/userfiles/file/77151673117.pdfIn PDF document text
- http://exdebt.bg/userfiles/file/xojukilibokuke.pdfIn PDF document text
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/3352b2b97943afcdb05a539d69d40594/21254643109.pdfIn PDF document text
- https://theshamrockpublecco.it/file/97999724411.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=what+does+2+22+meanPDF 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_off0000eaf8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAF8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001030f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1030F | 10388 bytes |
SHA-256: 05b9e145d903c6d6d2be7da992b75e0cf2f16c89cfdf010504e85c3f1b347981 |
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font_02_sfnt_off00011a78.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A78 | 16276 bytes |
SHA-256: 474930f8c479b20310d8c63ff2ccd626d83b4a8e1cb48f0e94163da4d6271ede |
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