MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified numerous embedded URLs forming a link farm, many pointing to compromised WordPress sites or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of these links indicates an attempt to lure users to external sites, likely as part of a spearphishing campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
Heuristics 7
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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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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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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://infrive.ru/uplcv?utm_term=max+level+heroes+for+th11
- https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608d11920e2ed---gilovoj.pdf
- https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/92b0f3e333db24191d3589b7ba63be10/85686045270.pdf
- http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160c42f355b849---tixiwunabifu.pdf
- http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606d59136f17f---zakebefod.pdf
- https://hr-serdahel.hu/images/file/6858543834.pdf
- https://pelletier-tp.fr/ckfinder/userfiles/files/35389194517.pdf
- http://casier-a-bouteilles.fr/file/67573663621.pdf
- http://laclonghotel.vn/upload/files/lavedasenalirivonozu.pdf
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d2fa34199f4---jupog.pdf
- https://ymvii.com/admin/upload/files/bofudijegi.pdf
- http://aliceinformaticasrl.com/user/pages/77071013939.pdf
- https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e7186ba3f3---satozonusiwexumovux.pdf
- https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/j8qbcue1oo1k4q8hp62din3an1/dekekuwifusasuladu.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae2f67bf51c---soroko.pdf
- https://lastcallslc.com/wp-content/plugins/super-forms/uploads/php/files/4ecffd55c2310bf0ca5597940eff4a2f/zadomazaga.pdf
- http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075886b342f8---41644123675.pdf
- http://www.yoko-ono.be/images/userfiles/file/voritutak.pdf
- http://asiavent.com/UserFiles/file///63561870742.pdf
- http://freewest.at/71175314480.pdf
- http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091b76809bb7---73264038389.pdf
- http://turar-mussin.com/userfiles/File/23630554037.pdf
- https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/da4a5f47988097a5080ddf95325b4a2b/66929782561.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_off0000e930.binf455b200a874356619d785a7fb7385c47f4b6b6ef21cc2456c6e4b9f5a067543 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE930 | 17896 bytes |
font_01_sfnt_off000117d2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117D2 | 16792 bytes |
font_02_sfnt_off00012fe9.bin5b20171864d799ceabec0a2c3e78cc04e705da2884d8f12028686f24cb05f0ac |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FE9 | 10328 bytes |
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