MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains numerous links, many pointing to compromised WordPress uploads, suggesting it functions as a link farm to distribute malicious content or phish users. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/54bb5b7639c6a9bceb48b79a9eb2e95a/22180983810.pdf
- https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/217976d3c28417699228aa0623a3aa8e/wubomevazubixeb.pdf
- https://divinenine.net/userfiles/file/wozevoninewa.pdf
- http://vinhthuanvietnam.com/upload/files/93702389292.pdf
- http://rm-centr.ru/uploads/file/63900706668.pdf
- http://aeon-dev.com/uploads/files/202109010915092183.pdf
- http://www.parkwaytransplant.com/media_upload/upload/files/vugopenusubowofukir.pdf
- http://jnmindia.com/outscapes/admin/ckeditor/uploads/ck/files/rimifikekagefu.pdf
- https://fundreamz.com/ckfinder/userfiles/files/xikojetemefomaneped.pdf
- https://soudurelauziere.ca/upload/editor/file/fomixikuvelepuge.pdf
- http://herium.net/FileData/ckfinder/files/20210904_C3ADC7B58202BF2D.pdf
- https://marsanz.pl/uploads/fck/file/88250525171.pdf
- http://hanhthien.net/uploads/file/65401973031.pdf
- https://markaoyun.com/calisma2/files/uploads/satikefezizuzomuvasu.pdf
- http://domplus.su/userfiles/files/78025671363.pdf
- https://intrigantka.ru/images/userfiles/file/80108340288.pdf
- https://okud-istra.hr/userfiles/file/lerinojol.pdf
- https://ariaparvaz.com/basefile/ariaparvazcom/files/dovaxexukoki.pdf
- http://iktoktatas.hu/files/file/55358967819.pdf
- http://classicalgardenfountains.com/uplds/file/37254846775.pdf
- https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/b6c6bc962d5dce16f461d53093fcfb9a/64634167890.pdf
- http://posicert.com/upload_fck/file/2021-9-6/20210906220857696253.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=pocket+build+download
- 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_off0000da8c.bin92374779fa0eb71d39e587ce79f2a0445d0bb6572cccd55d845366b5f75c8a05 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA8C | 10516 bytes |
font_01_sfnt_off0000f2ac.binf6a847e83a82ada97d9fb19145a463d236bb543394e34c88bfc2a849a8896aea |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2AC | 17084 bytes |
font_02_sfnt_off00011f19.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F19 | 16792 bytes |
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