MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest a phishing or malware distribution intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious activity.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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://krisoc.ru/uplcv?utm_term=farmacos+para+el+corazon+opie PDF link annotation
- https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/62ikmj6q7p4bm7rie5chedgj5s/65078566090.pdfIn PDF document text
- http://aaykpn.com/uploads/editor/files/zovunegemisi.pdfIn PDF document text
- http://hzdsbg.com/uploadfile/1621102787.pdfIn PDF document text
- http://benthanhsgfarm.net/images/uploads/files/20862801216.pdfIn PDF document text
- https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/0f8vjfotqcd8cop77ishtqc0pm/44547797678.pdfIn PDF document text
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f713f642ef3---jatuvekekixoxewabamoti.pdfIn PDF document text
- http://angelofthewinds.org/ckfinder/userfiles/files/61205602571.pdfIn PDF document text
- http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160840284c31cc---91843283320.pdfIn PDF document text
- https://suacuacuontoanphat.com/upload/files/375431268.pdfIn PDF document text
- https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afdf27df082---dovututemixo.pdfIn PDF document text
- https://mszukam.pl/dat//file/76075214790.pdfIn PDF document text
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d3cc0d59e---junejiwafijikojorijowaxe.pdfIn PDF document text
- http://pcserviszlin.cz/ckfinder/userfiles/files/40940708566.pdfIn PDF document text
- https://styliststudios.com/imagesTE/file/56292638171.pdfIn PDF document text
- http://186086.com/upload/files/vawilotofafijapegij.pdfIn PDF document text
- http://carzip.biz/files/uploads/files/7960958632.pdfIn PDF document text
- http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096835c9da80---81935350826.pdfIn PDF document text
- http://ttccid.com/userfiles/files/ritelajesediro.pdfIn PDF document text
- https://tepihtrava.rs//files/24528547713.pdfIn PDF document text
- http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608378d80eb80---7727067359.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e2ce7f42f54---59783379812.pdfIn PDF document text
- https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160ba39afaf0f9---37337693005.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_off0001033e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1033E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00011b55.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B55 | 10472 bytes |
SHA-256: 2b0c0e0ac21a526899080b98716f036fc18f4c2c21d92aebe18aad684dc435dc |
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font_02_sfnt_off00013314.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13314 | 18600 bytes |
SHA-256: fe4f1fdab2990d2773eed47e70ebc6ded9878155faaf31364dc8d77de70c3665 |
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