MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of numerous external URIs, many on disposable hosting and utilizing UTM parameters, strongly suggests a link farm designed to redirect users to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and the nature of the URLs point towards a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 5
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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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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://laborke.ru/uplcv?utm_term=mmorpg+offline+games+for+android PDF link annotation
- http://www.salac.cz/ckfinder/userfiles/files/44497424842.pdfIn PDF document text
- http://hidramaco.com/files/files/42768518016.pdfIn PDF document text
- http://music-summer-courses.eu/upload/files/45172634509.pdfIn PDF document text
- https://kotata-zlin.cz/obr/clanky/file/1274201770.pdfIn PDF document text
- http://macierz-grodziec.org/files/file/rusukalepodukujiz.pdfIn PDF document text
- http://18554080.com/userfiles/file/87332392802.pdfIn PDF document text
- http://tootingtaxi.com/survey/userfiles/files/37564013711.pdfIn PDF document text
- http://lasfyy.com/uploadfile/file/20210909062347027.pdfIn PDF document text
- https://bahamianbrewery.com/ckfinder/userfiles/files/bikikomogilizejonewizip.pdfIn PDF document text
- https://flomogroup.com/upload/files/tekoviguj.pdfIn PDF document text
- https://hotelharmika.com/assets/userfiles/files/57048550222.pdfIn PDF document text
- http://odnoklassniki-files.ru/images/uploads/files/97565296439.pdfIn PDF document text
- https://investincarpathians.eu/app/webroot/media/files/vulejeporog.pdfIn PDF document text
- http://ulleungroadtour.com/FileData/ckfinder/files/20210912_B73D49E7C53E7BF1.pdfIn PDF document text
- https://walnutcreekguide.com/wysiwygfiles/file/zudeleragopapumotasa.pdfIn PDF document text
- https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614254fb3817b---bofazijekofebetavofebeju.pdfIn PDF document text
- http://stadion-zarya.ru/ckfinder/userfiles/files/47446781892.pdfIn PDF document text
- http://absolutelyneon.com/userfiles/file/46018753614.pdfIn PDF document text
- https://globalcircle.club/userfiles/file/1399264549.pdfIn PDF document text
- http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16134e7176ec8c---sapazebabotamofumosak.pdfIn PDF document text
- https://mvmdigital.gr/files/files/10034130153.pdfIn PDF document text
- http://szerecsengyogyszertar.hu/editor_up/merovitifomo.pdfIn PDF document text
- http://alibabashipping.com/userfiles/file/vesusigatig.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_off0000eab4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAB4 | 16696 bytes |
SHA-256: 6c367f7bc16368624bddae4a3b123b9b56d855017dec489af59c853a37209f23 |
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font_01_sfnt_off000115d2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x115D2 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012de9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12DE9 | 10736 bytes |
SHA-256: 3b78b978455f9187bc5e2d20a78f43d7f6d0268955925443bfe41a271e1301bf |
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