MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. The presence of embedded URLs and link farms points towards a strategy of directing users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 7
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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 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://allytemp.ru/uplcv?utm_term=how+to+write+letter+asking+for+financial+assistance
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16075da34209c1---sodexologovi.pdf
- https://nada70.org/userfiles/file/31927284762.pdf
- http://secretinvitation.net/images/files/wiwijolorodarujexu.pdf
- https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/ee3f9b3ccc3b3bab8d2176dbc5b227e7/vuzapevoroxiwo.pdf
- https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16118f37ea17b8---nixodoperisaxoreguxasado.pdf
- http://wamer.org/userfiles/file/gewefojevalufo.pdf
- http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/56228825471.pdf
- https://nikken-engineer.jp/export/sd205/www/jp/r/e/gmoserver/8/6/sd0748886/nikken-engineer.jp/fckeditor/upload/file/84815796088.pdf
- http://sgyscom.com/upload_fck/file/2021-8-21/20210821062744607142.pdf
- https://luminex.pl/upload/file/kulix.pdf
- https://7mark3t2-7aya.com/contents/files/donigaz.pdf
- https://booknowrentalimo.ch/userfiles/files/94109571720.pdf
- http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb55320da3b---98563160741.pdf
- https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afbd0f95cba---94811850380.pdf
- http://www.vikingmaterials.com/img/rexapexozurovebarigal.pdf
- http://clinicaveterinariacittadivignola.com/userfiles/files/lufal.pdf
- https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/cb5c445018d43ac32930929989547fa2/xagela.pdf
- http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/f9ef2ac99c011385bca17aaded6319fd/59517004674.pdf
- http://www.anclupnapoli.it/userfiles/file/fibupepuwolaju.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/161181b0ef3ece---bexuzaker.pdf
- https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/sqanps6m7iqbkcvpnlqb0luol1/lejevididagib.pdf
- https://storycycle.com/ckfinder/userfiles/files/67132501529.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_off0000d3e6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3E6 | 16792 bytes |
font_01_sfnt_off0000ebfd.bin518fe4157bc0c1e7ca512ae54d86e0931f98c7cf9a29bf83e8433f5060d24cc3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBFD | 10680 bytes |
font_02_sfnt_off0001049e.bin6c6d7304b051f08635bd047932b4c69bff997ce9256504f6bef90054fa307c6f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1049E | 16556 bytes |
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