MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a phishing or malware distribution campaign. The PDF structure and embedded URLs are consistent with techniques used to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://krisoc.ru/uplcv?utm_term=traffic+congestion+ppt
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/opdu8nlmolvdu52jkrahkge6m2/masadeg.pdf
- https://edcasys.com/ci/userfiles/files/ditil.pdf
- http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160822b9bca3b7---nivitasujuzavubukamu.pdf
- http://ampletrekking.com/userfiles/file/56227876741.pdf
- https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/jass2pagm3cgnl2cp9hoqqve78/kefuvubigim.pdf
- http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5579cb475---80163976705.pdf
- https://emauto.lv/index/images/up/file/parivujupod.pdf
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/03e8d2ac6baf813cf2381623c3b96ba4/2835649849.pdf
- https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bfa441219b4---noruvemipanog.pdf
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/76aff43253bb69ed80285725ef671c7b/gozibinudire.pdf
- https://ozmutludokum.com/userfiles/file/83662170180.pdf
- https://mvpartners.be/images/uploadedimages/file/mujutuniwisuruteluno.pdf
- https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/b9a6ae34674390bf6f27f6e2a95f22b7/74009262535.pdf
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a9fa6f90941---wurojij.pdf
- https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/48020f095ddba361f5e52d5c2aa96130/10925562836.pdf
- https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/addf172ec67e8f92663651485cdb1863/41618033916.pdf
- https://adepotcustom.com/UploadFiles/file/20210502001354110.pdf
- http://remproekt-m.ru/admin/ckfinder/userfiles/files/runub.pdf
- https://doellefjelde-mussemarked.dk/images/newsmail/file/kikoze.pdf
- https://salubrismd.com/wp-content/plugins/super-forms/uploads/php/files/e745d98af961f6e49212111e596e6b68/guvabenisanototegipafogo.pdf
- http://conelser.hu/fck_uploads/file/kogibe.pdf
- http://reklama-v-sochi.com/ckfinder/userfiles/files/kuteremoje.pdf
- 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_off0000bb7e.bin21761ca6308f880c2d42e3c3d2cd3d57049090f47ed27daf265187e86e4a3ff6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB7E | 16496 bytes |
font_01_sfnt_off0000e584.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE584 | 16792 bytes |
font_02_sfnt_off0000fd9b.bin1a0bc6d7eb3c98dd02f01290c0647248f53839ca1a90297637af32df4fe05e34 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD9B | 10572 bytes |
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