MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Numerous external URLs were extracted, many of which are hosted on disposable domains or compromised CMS upload storage, indicating a link farm designed to redirect users to potentially malicious content. The presence of 'utm_term' parameters suggests an attempt to track user engagement with these lures.
Machine Learning
- Nyx PDF Classifier malicious score 0.9957
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=king+kong+android+game PDF link annotation
- http://galerie45.com/userfiles/file/rezalojam.pdfIn PDF document text
- https://bakotech.at/uploads/ckeditor/files/gedulejefakuj.pdfIn PDF document text
- http://chinawin-consult.com/userfiles/69313604264.pdfIn PDF document text
- https://www.shipgo17.com/plugin/ckeditor/ckfinder/userfiles/files/56302688799.pdfIn PDF document text
- https://pnp-studio.com/fckeditorfiles/file/90222793890.pdfIn PDF document text
- http://frezerovka.by/images/fxeditor/file/305712795.pdfIn PDF document text
- https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b5d5cf0a92---xutarer.pdfIn PDF document text
- http://goksirkrupskimlyn.pl/img/upload/files/duvogemokugozizaxo.pdfIn PDF document text
- http://visusmarble.com/images_upload/files/nejejexinejimefenamit.pdfIn PDF document text
- https://thietbixanh.net/uploads/files/52582679330.pdfIn PDF document text
- https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/edubr9u6mdc8llfjk7et9amrsc/nejurixutole.pdfIn PDF document text
- https://minipowerpack.net/upload/files/99765122333.pdfIn PDF document text
- https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613335bc243c9---70617797014.pdfIn PDF document text
- http://dpkwi.org/userfiles/files/22472881612.pdfIn PDF document text
- http://merlegdoktor.hu/tmp/jiwopegikerolofuki.pdfIn PDF document text
- https://bientannamhuy.com/wp-content/uploads/files/zajibokef.pdfIn PDF document text
- http://tmkb.org.tr/ckfinder/userfiles/files/todugofodutagobozoko.pdfIn PDF document text
- http://hiniceshine.com/upload/fewetajadamezuzuvili.pdfIn PDF document text
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613cd73989401---fovugirulurum.pdfIn PDF document text
- http://nhasachconggiao.com/luutru/files/44145699866.pdfIn PDF document text
- http://cassotech.nl/site/data/ws/files/damorilujolaxe.pdfIn PDF document text
- http://safetyassessmentsolutions.co.uk/ckfinder/userfiles/files/85295816857.pdfIn PDF document text
- https://ashleymongolia.mn/uploads/files/91208287660.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ae11.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE11 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c628.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC628 | 10360 bytes |
SHA-256: e9a8045fe8532857c1b66409da4d7cc19421fd8cdc13ef5e930b57a2089ac0e3 |
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font_02_sfnt_off0000dd46.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD46 | 14988 bytes |
SHA-256: 9f09d17ed4f78c2a01ddf3fac4e79fcc012f681752e5c4484903c36b83190652 |
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