MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous embedded URLs that function as a link farm, directing users to potentially malicious content. Several heuristics indicate that these links point to compromised CMS upload directories, suggesting a tactic to disguise malicious payloads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 6
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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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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://catamma.ru/uplcv?utm_term=8+letter+words+starting+with+ap PDF link annotation
- https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/f476f9445db7ffe94e71cf5a20dacfcb/gusopobuvaxepofi.pdfIn PDF document text
- https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/531ebfb3e46fd82c7ac6a59c207aa845/xonobirar.pdfIn PDF document text
- http://abwingssuffolk1.com/uploads/files/82882492569.pdfIn PDF document text
- http://www.doctor-carpet.com/wp-content/plugins/super-forms/uploads/php/files/6jg7jhv7dto3672c65da46b8k5/satilowipikadufewimigijot.pdfIn PDF document text
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7404f4b376---91704824321.pdfIn PDF document text
- https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093da39c3f98---sawuk.pdfIn PDF document text
- https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/v784ea3tu5g1fdsvv9mbs7utk5/tunab.pdfIn PDF document text
- http://aep-tc.com/cache/fck_files/file/fujokamuroxemazowunopaju.pdfIn PDF document text
- http://jejuecotech.com/ckupload/files/87838933090.pdfIn PDF document text
- http://trungnguyenjsc.vn/uploads/image/files/fubowiwilomemat.pdfIn PDF document text
- http://www.stemcellhairclinic.com/files/files/1827132178.pdfIn PDF document text
- http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec48202ce7---damituro.pdfIn PDF document text
- https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a27c88739bc---wovepudakutojuzelexubibel.pdfIn PDF document text
- https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/86086136ea388ac8f18d4017943216d1/tujawiwuvaxilunuvakujem.pdfIn PDF document text
- 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_off0000e46a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE46A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000fc81.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC81 | 10868 bytes |
SHA-256: fef88896e592fe0ac1a0d4d71d36b572559b29fd943f326509aa81e8f9ccbd30 |
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font_02_sfnt_off0001155f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1155F | 17868 bytes |
SHA-256: af7ac71471d45ce86c4690643d54c1d2a63e1975bb10f8d78e1c283fe7bbc816 |
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