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 functions as a link farm, with numerous URLs pointing to compromised or disposable domains, suggesting a phishing or malware distribution scheme. The PDF structure and the nature of the linked URLs strongly indicate it's intended to lure users to malicious sites, likely as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9917
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://beiwendq.com//data/attachment/file/duzugupupudurubej.pdf
- http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/38e068f0f648addae15b97a20c00159b/nebemonejebumaboxakugule.pdf
- http://ambvetbrashersclavoghisu.eu/userfiles/files/97400162626.pdf
- http://modamoda.nl/uploads/pic_lib/file/76135851024.pdf
- https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/11255cea7d3f63255c6ec3aa96e8b1d6/zejubipomuburidevevivedi.pdf
- http://www.farmaciapenil.es/userfiles/files/migopunamafibev.pdf
- http://wanyuantemple.tw/userfiles/file/diwejunovofimitosilepekoj.pdf
- http://www.anclupnapoli.it/userfiles/file/jujaxo.pdf
- https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/c379232537e3b870103ee3c189b52d1d/61559462571.pdf
- https://nestaerospace.com/uploads/file/33029500437.pdf
- http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160719481335c0---webatudodepilevedosonur.pdf
- https://designclarf.it/file/zanovakoxibin.pdf
- http://vuatoyen.com/uploads/userfiles/file/zerizajaniko.pdf
- https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/421cb75a4ec7c0fc168d2290f4108ff0/garabusuruvixuwem.pdf
- http://thessalonikiflights.com/files/files/52908215031.pdf
- http://a2itsolutions.com/chop/multimedia/userfiles/file/gipexiwadanofepevorag.pdf
- http://palyavalaszto.hu/teszt/upload/file/91494582741.pdf
- http://intertexmedical.com/userfiles/files/52215180711.pdf
- http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/kobefobifetijebijasapufa.pdf
- https://bamor.org/userfiles/file/votaritefal.pdf
- https://fajanav.com/aym_image/files/gofamibefigoxugoxoxe.pdf
- http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f838465759---89143904228.pdf
- http://captainkillmite.com/uploads//files/202108091055113318.pdf
- http://envigest.cz/upload/file/vipinaroredasotadi.pdf
- https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/hd6sboq1j583kopg5s4lpov478/nufufezataronelesavozig.pdf
- http://scouttautomotive.com/editor_uploads/system/files/visubav.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=subscribe+pdf+free+download
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d2d3.bin828c7a7c5cc895df4b636982cb7a243a908a80f1d285413279828fcc5c24c5c5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD2D3 | 10916 bytes |
font_01_sfnt_off0000ec00.bin77496375e5a1867ac6429209418f9887c9ef7be7679f5eadaddda583efde3b1e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC00 | 17240 bytes |
font_02_sfnt_off0001181e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1181E | 16792 bytes |
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