MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ClamAV as 'Pdf.Phishing.Trojan' and ML classifiers indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to compromised CMS upload storage, with many distinct hosts and URLs. The embedded URLs suggest a phishing or malware distribution scheme, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://laps.pl/userfiles/file/xamizewu.pdf In PDF document text
- http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d0cb9e4ae69---kafev.pdfIn PDF document text
- https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b18b6fcd701---8691156362.pdfIn PDF document text
- http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/tttha1h0u0qdsln8io7tusoan4/nofejotixijebegowofavet.pdfIn PDF document text
- https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/4ea828lvbfdr1p1cs7m7naj4q4/5633304069.pdfIn PDF document text
- https://dakhoathienhoa.net/images/files/54220096283.pdfIn PDF document text
- http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16087e3ce77fcc---bunulajirapejofelojativi.pdfIn PDF document text
- http://i-daa-wl.de/userfiles/vesokefejub.pdfIn PDF document text
- https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/6gm3iqs9eis7o0hg2178m3u92n/51152688255.pdfIn PDF document text
- http://longthinhphat.net/uploads/files/45624347221.pdfIn PDF document text
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160707f824b1b7---nikaxuwegebiwamuleseg.pdfIn PDF document text
- http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ae4909d15c---61495302509.pdfIn PDF document text
- https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/f7c1e28e323a36f2ff0e5b741a88a614/36518002804.pdfIn PDF document text
- https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/8b077bab1f2951ce15d47187be4f21d0/nedodawu.pdfIn PDF document text
- https://actor-conseil.com/files/file/29300642797.pdfIn PDF document text
- http://dafangtour.com/fckeditor/userimages/file/47938311589.pdfIn PDF document text
- https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/52f2ca930d328e6854dd5dd6226a4de7/84245823746.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=185+lbs+to+kgPDF link annotation
- 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_off000109eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109EB | 16776 bytes |
SHA-256: 6387a107569bb1fff719314e5e22fb8d4e766d086feed3b3598f9cd1cb2619ca |
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font_01_sfnt_off00013597.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13597 | 10224 bytes |
SHA-256: f15b48c85b08bde3428ee17f86649e56d7944e9a8b02334822dfc1ce7c702167 |
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font_02_sfnt_off00014cbd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14CBD | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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