MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample contains embedded JavaScript, which is a common technique for initiating malicious actions in PDFs. It also features a link farm pointing to multiple PDF files hosted on compromised WordPress sites, suggesting a phishing or malware distribution campaign. The ClamAV detection and ML classifier strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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 http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/aa529394e17614be7debdcaea6a65a95/63981859355.pdf
- https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/1hneo66vroncq7tq38ml8tnk0h/lefitarukivimebir.pdf
- https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160718654a90e0---dodajijuwuxojaruveruwukef.pdf
- http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b2b3de84b5---97706297778.pdf
- http://andreaslasnik.com/data/files/43762727262.pdf
- https://imad0c0.com/js/ckfinder/userfiles/files/35228193958.pdf
- http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c64cb255e4---sujelaril.pdf
- https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea51ee9607---90217074961.pdf
- https://hagepoorter.be/files/files/nufiretuzibute.pdf
- https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/7a124425592322c3b8d4cb1f6eecc4f2/53029281080.pdf
- https://www.justgym.co.za/wp-content/plugins/super-forms/uploads/php/files/4s66rl4n3k820sni39m3mdr22f/kaliruwawusemajobuwo.pdf
- http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160c741e48c942---wakatem.pdf
- https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/20mivmrbiapqamhfrohmjd6pep/11235981553.pdf
- http://fmi.lu/userfiles/files/60132642720.pdf
- https://tourpon.kr/FileData/ckfinder/files/20210621_E8F5E9F33A692C36.pdf
- https://sy-tech.eu/file/vaxaduketituz.pdf
- http://sbnjl.com/userfiles/files/32389194468.pdf
- https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab4aeac6882---xivopevidisonidebapa.pdf
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c23d8e1eb6---92844892356.pdf
- https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/c30b4e3528db44122a32cc556eb680b9/9578508260.pdf
- http://drive4smilesontario.com/clients/e/ed/ed023a0734c265ca673a92d1d81de675/File/kalipiginixowaz.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=minecraft+how+to+op+someone
- 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_off0000e941.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE941 | 16792 bytes |
font_01_sfnt_off00010158.bin1ba42a43c3ccea1bd6b7d0f550b5779b76ac4f9a7eb9c97bc0a871cc2105a3a7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10158 | 10776 bytes |
font_02_sfnt_off00011a0f.bin72d2d57dbe0e711626a8202efc0a6a25940409bb7fe6698cc024786163a3838b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A0F | 16652 bytes |
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