MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised CMS upload directories. These links likely serve as a distribution mechanism for further malicious content or phishing pages. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, offering no direct user-facing content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://n-production.com/upload/fckeditor/file/46095973727.pdf In PDF document text
- http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e4eeb8312d---73188766463.pdfIn PDF document text
- http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae469835109---66862299843.pdfIn PDF document text
- https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/0316f63410624fa2002ae2884bb802d6/samug.pdfIn PDF document text
- http://puppies-4u.com/clients/e/e7/e7f09595da74c05d2059c741134300d2/File/wejenobogawisusuvizaje.pdfIn PDF document text
- https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160a78e694749a---51523516878.pdfIn PDF document text
- https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/cbe5a7c49d4b750d5c8dadd0584e6f4d/17156000476.pdfIn PDF document text
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e54150338d---51440804711.pdfIn PDF document text
- https://biocoils.com/img/file/32143603337.pdfIn PDF document text
- https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/160b927864fb75---96117855238.pdfIn PDF document text
- https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/c845d5561f0c08d0d7d01bb576ecf3f8/polug.pdfIn PDF document text
- https://lensprovn.com/ckfinder/userfiles/files/39281147153.pdfIn PDF document text
- http://ff-engineering.com/userfiles/files/zunixa.pdfIn PDF document text
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/ujeeae003l893bnutd7llbduis/fusixidupakezopaganise.pdfIn PDF document text
- https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/89afdc8e0ba5bd51b2c5f8a25c9caae0/korurabodirotabeborefisud.pdfIn PDF document text
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/7c936f789d9b9890c75ef8d2bec48d84/xuteb.pdfIn PDF document text
- https://dietacud.eu/upload/file/18574290645.pdfIn PDF document text
- https://atcotourismtravel.com/userfiles/file/xifub.pdfIn PDF document text
- http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a15220cec18---45406169913.pdfIn PDF document text
- http://ptairsupply.com/userfiles/file/79797593865.pdfIn PDF document text
- https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/oa2hocikkcd9ca26gb7rjcmbp7/9994146299.pdfIn PDF document text
- http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075970789cca---xibimukozuvebonudokumov.pdfIn PDF document text
- http://fanti-fitness.pl/uploads/assets/file/600482409.pdfIn PDF document text
- http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b05faae7d59---1308701111.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=roasted+sweet+potatoes+and+broccoliPDF 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_off0000ee18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE18 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001062a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1062A | 17592 bytes |
SHA-256: 01728373dbd493252dc1466cfc63f7beeb4bbcddcf482a47bcd6f7ace2ba44dd |
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font_02_sfnt_off000133fc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x133FC | 10776 bytes |
SHA-256: 7eb684d2b841580cc1606986411eacdf1535b612b20a179342c66fa0539c86a5 |
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