MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' further supports this, indicating the PDF's primary function is to act as a lure for further malicious activity.
Machine Learning
- Nyx PDF Classifier malicious score 0.9986
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 https://infrive.ru/uplcv?utm_term=android+azw+reader PDF link annotation
- http://webs123.com/userfiles/file/23345995135.pdfIn PDF document text
- http://leton.pl/userfiles/file/66011831532.pdfIn PDF document text
- http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/161307dac02416---45063808213.pdfIn PDF document text
- http://fixafilm.se/userfiles/file/kuneniwa.pdfIn PDF document text
- http://rubella2.integra-sh.com/userfiles/file/niwozoguwesebutajonoli.pdfIn PDF document text
- http://manpukuorder.com/uploads/files/kijolokaxofotewupamutezi.pdfIn PDF document text
- http://brandweeramsterdamamstellanden.nl/userfiles/file/9986395837.pdfIn PDF document text
- http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140e3cf051ba---13794082632.pdfIn PDF document text
- http://criminisiepartners.it/userfiles/files/7580123999.pdfIn PDF document text
- http://vakantie-noordlimburg.nl/ckfinder/userfiles/files/18924649720.pdfIn PDF document text
- http://egyptlance.com/userfiles/file/samurum.pdfIn PDF document text
- http://meetburgerusa.com/uploads/files/33403218102.pdfIn PDF document text
- https://bloomland.com/sites/bloomland.com/files/jatutirabapijiwimoxak.pdfIn PDF document text
- https://firsatoyun.com/calisma2/files/uploads/gefosevuweragavekubulev.pdfIn PDF document text
- http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/01114634a16fc144c2ae43c32548ef5e/pigoxek.pdfIn PDF document text
- http://pm-ural.com/uploads/files/44848472181.pdfIn PDF document text
- https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/5073d0f72486c350ff206c122df36d75/nabasoxevuselelamukopep.pdfIn PDF document text
- http://gizmakina.com/depo/sayfaresim/file/gugiziwusalasumarobodo.pdfIn PDF document text
- https://nenmongdangquang.com/upload/files/60451758789.pdfIn PDF document text
- http://righetti-ticozzi.it/userfiles/files/sexevub.pdfIn PDF document text
- https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614f08330631e---golik.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_off0000b079.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB079 | 18128 bytes |
SHA-256: 56c48289e7a81e7153e35976df19ff0e0ce84e9d2104a513b8201c43fc8a8456 |
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font_01_sfnt_off0000ddef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDEF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f606.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF606 | 10056 bytes |
SHA-256: 1f8452ee0ccebe2eabab4bdfd788df8eaf90cd91a2cab1bf5bd7585c26ce48ac |
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