MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple compromised WordPress upload locations and disposable hosting sites. The embedded URLs, such as 'https://chcial.ru/uplcv?utm_term=easy+low+calorie+lunches', are likely used to lure victims into clicking through to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://chcial.ru/uplcv?utm_term=easy+low+calorie+lunches
- https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/7e5b79eac6681e178559e63e676b42fe/raxivubu.pdf
- https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/ohbeapk0pis0k6aqvis6d0tb48/lagixabe.pdf
- https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/afdfd6b6ccd932933bf32c85c7a38ec8/47208572934.pdf
- http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/l7shreloqp6ql881svq5e132ta/duxoxizis.pdf
- https://thuaphatlaihoanghuy.com/uploads/files/pugunebuguku.pdf
- http://thesnowmanicecream.com/ckfinder/userfiles/files/nojiwilulubaxojevopi.pdf
- http://all-pass.com/folder/editor/file/vikujusemisijedunuga.pdf
- https://hutechsolar.com/upload/user_upload/files/gazenize.pdf
- http://lustigersteirer.at/userfiles/file/relebatodimuxetulututurad.pdf
- https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/160861e3600fd6---jutade.pdf
- https://lasvegasrebath.com/wp-content/plugins/super-forms/uploads/php/files/a8e86eccade72e26563bb1e9181a1a52/99127890143.pdf
- https://fl-forever.com/upfiles/editor/files/satasoviv.pdf
- http://chinocorporatechallenge.com/clients/6216/File/pafenexiwametakove.pdf
- https://beautyyaurient.com/editor_upload/file/xowogekogatun.pdf
- https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609f679db0bba---tabumisawenuruviwunavad.pdf
- https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c9340ca5d7d---67099623046.pdf
- https://www.mftelhas.com.br/adm/Editor/ckfinder/userfiles/files/87511711578.pdf
- http://wintec-samu.hu/uploads/files/2083398274.pdf
- https://mabuksusu.com/contents//files/gabafuradafolavexiwafol.pdf
- https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f393b38d8c---fewemudekaz.pdf
- http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083bf7bb8d3b---94353908787.pdf
- https://dazhonghua1688.com/ckfinder/userfiles/files/76870491769.pdf
- https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/859d3b03c57f2064bdfaa92ae8996484/26627612352.pdf
- http://yds-wcv.jp/free_images/files/28637737366.pdf
- http://cherryontop.pl/upload/fotki/file/98892524697.pdf
- https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/f848fd831117ded569073dd8461c6252/babikegejo.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_off0000bf56.bine19187127be8629d5415a79d90ea637ac4dc6561eaea397d40915179cfa89b0d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF56 | 16260 bytes |
font_01_sfnt_off0000e8c4.binaa08f5a7a60bb30369d3557f76aeeabfe940ace2aa9b849a7fa7345754f131d0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8C4 | 10512 bytes |
font_02_sfnt_off000100b2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100B2 | 16792 bytes |
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