MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it contains numerous links to external PDFs hosted on compromised WordPress sites and disposable domains, suggesting a link farm designed to distribute malicious content. The presence of these links points towards a phishing or malware distribution campaign, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9919
Heuristics 8
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://infrive.ru/uplcv?utm_term=mcpe+monster+crazy+craft
- http://orsini-blasioli.it/userfiles/files/51641169479.pdf
- http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/3691ec4019ea1a52698f313462c667e9/totawegunera.pdf
- https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612e9a0a49692---penuzewa.pdf
- http://4bx.pl/public/file/79472386419.pdf
- http://lakesideterracecondo.com/clients/41361/File/rafuterosasoguke.pdf
- http://bhs76reunion.com/clients/e/e7/e717e6e8e39ea4daeda922698d41f3c9/File/wifuvun.pdf
- http://xn--j1aai7d.xn--p1ai/userfiles/file/lifaz.pdf
- http://nakamurasangyou.jp/app/webroot/uploads/files/dumibekiwinojej.pdf
- https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/8c5df9bc07fabd38f92616fb3e17395d/warupisutupagojefasis.pdf
- http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/16086f624beff1---53819883566.pdf
- https://bibonatura.com/ckfinder/userfiles/files/44717505221.pdf
- http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608129f846ae2---doseregekowezogutazuxa.pdf
- http://martom24.pl/martom/userfiles/file/81055513371.pdf
- http://www.gc-antey.ru/ckfinder/userfiles/files/gojegimodaleruzagafugefe.pdf
- https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/405982e88d6744972fbeb969280408d2/39621244749.pdf
- https://lescourailleurs.com/upload/editor/file/91045999121.pdf
- https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b4ddff2b064---26831915295.pdf
- https://tekmaker.com/upload/files/96506075285.pdf
- http://pvhs1980reunion.com/clients/e/e5/e5e9f74eb83211af097e98bf68d59c4c/File/zetaxejuzukake.pdf
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/d19ee615393cffadd8d426be454b942c/23436612524.pdf
- http://technology-mp.it/userfiles/files/31956513172.pdf
- http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ade0293b0d6---boramowuvujeruziw.pdf
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/0eiqr4qtd51f5genhpto6mi912/35204200105.pdf
- https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/tmp/gifusulepezuxowabe.pdf
- http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/17538045060bc612800f68.pdf
- https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/tue085nd82mv22ttgbpmepe9e2/33946667496.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_off0000e27a.bine880267f5b43f2967c347eccf6600764d70468539770c0ecac882a45740a22d4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE27A | 18868 bytes |
font_01_sfnt_off0001134d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1134D | 16792 bytes |
font_02_sfnt_off00012b64.bin5dc9d6153e5ab3b8fcbb97a442bcc97dcc74ce46ce02ee847840957fb20b97d2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B64 | 10672 bytes |
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