MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting. Heuristics indicate a link farm strategy, with a high ML score and ClamAV detection confirming malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are strongly indicative of a malicious document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9983
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://chcial.ru/uplcv?utm_term=confidence+interval+2+proportions
- http://soul-program.com/clients/e/e8/e84723a0d254fbc5507aaa4bd1967541/File/29606958019.pdf
- http://liburnia.pl/userfiles/file/votatakuzitapegufepo.pdf
- http://vo23.ru/upload/file/34649473056.pdf
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/6d7215e10dfce0cf3f19513dd2a70082/49976115204.pdf
- https://skywaytravelandholidays.com/ckfinder/userfiles/files/8651549778.pdf
- http://legendtec-eg.com/wp-content/plugins/super-forms/uploads/php/files/sn7n8k917bocb55auo9u9gr9t2/21286220600.pdf
- http://cheers-gifts.com/userfiles/loparuzexupupomidopafep.pdf
- http://aiaato.com/FileData/ckfinder/files/20210704_DA21679FC4308073.pdf
- http://bagumul.com/file_upload/spaw_upload/file/20210823195356.pdf
- https://matrainagycsalados.hu/userfiles/file/74635773922.pdf
- https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/fa76f4a4d45557944075b61353559060/pelivufigasosakudukuwij.pdf
- https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/c2ae49fb177a1811cae9d2f9297b2fc8/wemazosevadilimax.pdf
- https://area5srl.it/file/91704344768.pdf
- http://unionzglobal.com/ckupload/files/98687401014.pdf
- http://coinproject.com/userfiles/image/file/41687464232.pdf
- http://alternatifmedikal.com/img/userfiles/files/87635608499.pdf
- http://leasingtowers.com/ckfinder/userfiles/files/megutinefivi.pdf
- http://www.sas.edu.mn/ckfinder/userfiles/files/soduwexozukonebo.pdf
- http://burattinojatek.hu/userfiles/file/wamaxaritutib.pdf
- http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160778aa2215a9---wopubuv.pdf
- https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1606d62323d303---bitetopide.pdf
- https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/4f0ff7fcef91c469bb8ead9e49a57be4/wanarikiwib.pdf
- https://flyingfish-stay.com/userfiles/file/21145614727.pdf
- http://szentistvanpatika.hu/upload/file/wazixoravefowurerijefedis.pdf
- http://engineersclasses4competition.com/files/others/feluvodadevebiwav.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_off0000dafa.bind5e25e8b34fca55f26446788d20bc1714bae8de2d548929103e96fb2698a62ed |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAFA | 18892 bytes |
font_01_sfnt_off00010c54.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C54 | 16792 bytes |
font_02_sfnt_off0001246b.binc57a843c2a35eaa247f7f2ac3c491cdb1b830b5e884bb238a2ca14c2a4fb20a1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1246B | 10832 bytes |
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