MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm or phishing lure. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' further supports this. While no scripts were explicitly extracted, the nature of the URLs and the PDF format itself often implies JavaScript execution for redirection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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://queure.ru/uplcv?utm_term=element+of+literature+fifth+course+answers PDF link annotation
- https://vyrukrc.lt/userfiles/file/zafale.pdfIn PDF document text
- http://win-sonic.com/ck_imgs/files/xakuleg.pdfIn PDF document text
- http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/mktisiggl6sihqcu57n3akmg86/nuzeluronujovuwubano.pdfIn PDF document text
- https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/94020907968add11a5ec9f6ddb298fee/tinixelabunoburimopu.pdfIn PDF document text
- http://31kouqiang.com/userfiles/file/1629363620.pdfIn PDF document text
- http://dijladentalcenter-qa.com/userfiles/file/leripokifap.pdfIn PDF document text
- https://theatresaucinema.fr/uploads/file/36360256748.pdfIn PDF document text
- http://gapoom.com/upload/fckeditor/file/35011014250.pdfIn PDF document text
- http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160f86b45df672---pisuzegijowowadaxakuteli.pdfIn PDF document text
- http://showplus.ae/userfiles/files/fatemotuxutoderizedejida.pdfIn PDF document text
- http://rajskiewakacje.pl/userfiles/file/32680730096.pdfIn PDF document text
- http://parmalab.it/userfiles/files/tavaxifuvugamop.pdfIn PDF document text
- http://duszek-lasu.pl/userfiles/file/20946503327.pdfIn PDF document text
- https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/3rj3s9u39jtd1o5j3tik20g0hj/vofobanetixeganubuj.pdfIn PDF document text
- http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac58804a663---76774230615.pdfIn PDF document text
- https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/5257c6184cbfc5adeb09d491140d36d3/metubowemipozimofuxaser.pdfIn PDF document text
- https://its-bulgaria.bg/files/file/46707352999.pdfIn PDF document text
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c1c54fafc9a---miperipeminis.pdfIn PDF document text
- https://liur-krd.ru/userfiles/file/65551164832.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_off0000b962.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB962 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d179.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD179 | 10772 bytes |
SHA-256: 2242f1f3686c6e2d54b4f9b042f429508feaa05b4538a384cc18dccc4ac7f0b5 |
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font_02_sfnt_off0000ea15.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA15 | 17152 bytes |
SHA-256: 12e3436e12dfc145afaedc9ff1c0a4199f1291ac6233b7b41ec020779b69c972 |
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