MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links to compromised CMS upload directories and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a common tactic of luring users to external malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://oniceh.ru/uplcv?utm_term=11th+cs+book+pdf
- http://aimic.com/userfiles/file/xadokede.pdf
- https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160af93acc9b0c---61293883889.pdf
- https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/0i2rr3nfpajgt2ko11b0fpem61/dadazanokogabenez.pdf
- http://4grd.com/cmsimages/file/perago.pdf
- http://kotolantopeni.cz/file/53740687462.pdf
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/qgun82u58pojk3pvgnvaktntf0/84382537039.pdf
- http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/tir1namujr3q8hsf8o1pn4csv3/72095890756.pdf
- https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607deddd3b7d1---votizafudakavukogesobiw.pdf
- https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/16087160707cbf---zikijegitosepokepezuma.pdf
- https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/553eabb135eb35cc2064d992ca2f2d65/54209907394.pdf
- https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/5smpgv92c1jks8ohviqhn0c43v/77764880800.pdf
- http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607201b910a58---nuzis.pdf
- http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/e1c54f8997e09d59ae9c46fefd9940fc/5894234157.pdf
- http://mikailang.net/userfiles/file/20210601080014_1351879134.pdf
- https://areicon.com/images/file/basadusepub.pdf
- http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a47c54c3d74---44610171846.pdf
- http://zrdb-drogbud.pl/Upload/file/75853461394.pdf
- http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7849c51867---pumirerubogadubum.pdf
- https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/c6qh4ooa4bqt4nlbrcd0aip986/87687507967.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010192.bina92ecff05689dc48f52cc5a8d413c4263d3c34ddf5c027cbe78196ea2a8caf33 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10192 | 5068 bytes |
font_01_sfnt_off000112cf.bin19923662f1c49fc9a5f3763438c4d8a236102e8824a40851cca342127d08ff64 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x112CF | 10812 bytes |
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