MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous external links, many pointing to compromised websites or disposable hosting, indicative of a link farm used for phishing or malware distribution. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically identified as a phishing trojan. The document body is heavily obfuscated and contains metadata from wkhtmltopdf, suggesting it was programmatically generated to host these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
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 http://skulpt.in/admin/uploads/file/60385149199.pdf In PDF document text
- https://johanbjerke.se/userfiles/file/kiduximuwujilow.pdfIn PDF document text
- http://scarpatti.com/files/98564044694.pdfIn PDF document text
- https://immo-macedo.lu/userfiles/files/70101770337.pdfIn PDF document text
- http://lineshare.net/upload/files/20210911033609.pdfIn PDF document text
- http://seattleteriyaki3.com/uploads/files/sobotivevewivurigure.pdfIn PDF document text
- https://hirurgija.me/files/poteluritokasasibax.pdfIn PDF document text
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613099b680927---gekuwariwuzexig.pdfIn PDF document text
- http://zhongyuemedia.com/filespath/files/20210915160607.pdfIn PDF document text
- http://amunt.madteam.net/ckfinder/userfiles/files/34266600960.pdfIn PDF document text
- http://96stone.ru/userfiles/file/36180689467.pdfIn PDF document text
- http://ecompletecontact.com/ckfinder/userfiles/files/5291635584.pdfIn PDF document text
- http://kronospan-mofa.hu/editor_up/gigoguzuja.pdfIn PDF document text
- http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16139a352d36e6---geguveridavotogisus.pdfIn PDF document text
- http://energy-labels.com/userfiles/file/varatanazis.pdfIn PDF document text
- http://tingchucontrol.com/Uploadfiles/files/37721094898.pdfIn PDF document text
- https://ngenadmin2.nextgenphotosolutions-beta.com/app/webroot/files/file/remomufusibe.pdfIn PDF document text
- http://lumieye.com/userData/ebizro_board/file/mavowugozodunawepaxab.pdfIn PDF document text
- http://studiomontironi.eu/userfiles/files/25915429113.pdfIn PDF document text
- https://flomogroup.com/upload/files/kazoxemirowijosunatose.pdfIn PDF document text
- https://adtw1.elfjane.com/ckfinder/userfiles/files/zefoge.pdfIn PDF document text
- http://kingkady.com/uploadfile/files/8701429361.pdfIn PDF document text
- https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/8417a5f6bbbfc7411519e1966d9fac0a/6691689098.pdfIn PDF document text
- https://sportsslife.net/upload/ckfinder/files/81345935270.pdfIn PDF document text
- http://pnc21.com/files/fckeditor/file/19651579966135546d3bd05.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=honors+precalculus+final+exam+with+answers+pdfPDF 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_off0000d63d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD63D | 18248 bytes |
SHA-256: 827b5b1e8d0a3e2eb5e85ceaebfb6221ba3fc756a10c89f201f159af10edf649 |
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font_01_sfnt_off000105e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105E8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011dff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DFF | 11164 bytes |
SHA-256: ead2f0ec9bc74944a527bb30a72d0fc54e73d93e58b87fbee5cef3f6952813f5 |
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