MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document functions as a link farm, directing users to various compromised WordPress sites. The primary lure appears to be a 'Kar98 headshot ringtone', which is likely a pretext to drive traffic to malicious URLs. The ML classifier strongly indicates malicious intent, and the presence of numerous links to potentially compromised CMS uploads supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 5
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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=kar98+headshot+ringtone PDF link annotation
- http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b24b61d16a5---duloxipejupapososatesab.pdfIn PDF document text
- https://svetpoznaniyaonline.ru/wp-content/plugins/super-forms/uploads/php/files/f29b075b5a6e5c5a7a389a94c582cca4/nepirifilenabi.pdfIn PDF document text
- http://begemot-rus.com/uploadfiles/file/2021053008292373499.pdfIn PDF document text
- http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/ea41d13be6acfe7f218e44e1c52aff85/98551218399.pdfIn PDF document text
- https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1607730923bd48---27787336026.pdfIn PDF document text
- http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160acf0c6e20fa---bupumoxakivukosogelejijag.pdfIn PDF document text
- http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609476cd8792d---vukunuregokivabetejobew.pdfIn PDF document text
- https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160915f5fed881---mesatagejamelite.pdfIn PDF document text
- http://win-sonic.com/kida2018/ck_imgs/files/lunodivo.pdfIn PDF document text
- https://zweefvlieg.net/userfiles/file/wenuxizukagavudafosuduk.pdfIn PDF document text
- http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160c1717ec970f---wakelusalatalilenumapim.pdfIn PDF document text
- https://whitesal.com/data/images/file/4868_20210515035834.pdfIn PDF document text
- https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/58371ho24a8aqa9odj7kpgcigu/62714109062.pdfIn PDF document text
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/q3lqmol8b1m059l2f6fjn5qv33/29393261141.pdfIn PDF document text
- http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d36cf35002---xijoworugilimasijideko.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_004_off00015fc6.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x15FC6 | 21888 bytes |
SHA-256: 1b445d0da0eed4298968f1ff83ea7f31d6ab365d73c5d1ce7c913245cec465b8 |
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font_00_sfnt_off000118de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118DE | 5376 bytes |
SHA-256: 8fd07d33b52aeb11e465928ca2bde657bc99ec2f0c8ce1d8facf1b94686bf95c |
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font_01_sfnt_off00012b20.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B20 | 18748 bytes |
SHA-256: ca1f1215c29e55d01a72f20379d5e06070cea03092bdd9d25b8700313e5c3484 |
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