MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to potentially compromised websites or disposable hosting, designed to redirect users. The presence of multiple external URI heuristics and the PDF_SEO_DISPOSABLE_LINK_FARM firing strongly support this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 6
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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 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://wodepcb.cn/uploadfiles/files/jenozozirigidizofuluwopo.pdf
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609832db61488---winutodeladozitemev.pdf
- http://diagnosticaedilizia.com/userfiles/files/turul.pdf
- http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090a7602a8ef---walotupajur.pdf
- http://grandinhr.eu/images/user/file/gulumagiwu.pdf
- https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/dca9f7aa3532065838bd44396349e767/49641861419.pdf
- https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/dj4s5nqg4mm9m8cls7f2crjhgp/89534710002.pdf
- https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/09535b8464d58b6c9ea3411a795b10a5/85879407550.pdf
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607e5940c0da0---31489365389.pdf
- http://schmetterlingsgaerten.de/file/malez.pdf
- http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160812e79364a8---42388228130.pdf
- http://www.retorika-zidar.si/ckfinder/ckeditor_uploaded_files/files/figosidagoxufosanorirok.pdf
- https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/75804e71adde7ad9ee5a34099806ff1e/10271931435.pdf
- http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160833bf2eef07---89423427911.pdf
- http://prattsofdouds.com/clients/d/d8/d85aab9f4bcbae69c8358f7a9990a0b1/File/firinavugaguwabes.pdf
- https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088c8e79ff37---fobimutolafilir.pdf
- https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf04bd5a1cb---34625836890.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608925cfeb340---67786840820.pdf
- https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/f5b3e7fbfbd4054f21cdc075f8d47977/palapalixow.pdf
- https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/160c7c134c8d9e---98753123966.pdf
- http://allmedicus.com/userfiles/file/27544581167.pdf
- https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083c619aedc4---51079373823.pdf
- http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d8e386beb1---xifewulafug.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=1200+cm+to+m
- 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_off0000c8db.bin1a464203ddabeac5016647c765907fe50d71b081388bb9fb3e36394384a48ab7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC8DB | 17320 bytes |
font_01_sfnt_off0000f5c1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5C1 | 16792 bytes |
font_02_sfnt_off00010dd7.bin23696935894711ba2eb216928348a1ac46d91b7f4f37392638a63f7b17785836 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DD7 | 9784 bytes |
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