MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to compromised WordPress sites, suggesting it functions as a link farm to distribute further malicious content or phishing pages. The document body, though heavily obfuscated, appears to be a lure related to educational worksheets, which is a common tactic for phishing and malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/r10i120ig2l7lainrkvdc2meb8/zerakawomesotojogexika.pdf
- https://lastcallslc.com/wp-content/plugins/super-forms/uploads/php/files/eedbca8cb348d6abd3d5c74b76c5ac17/29175664243.pdf
- https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16077845978851---2158848409.pdf
- http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/gi82gnb42ngfnsogd7p7dke470/63752117286.pdf
- http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160899f19add03---biwinolonobativex.pdf
- https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c5ad57ff096fdff9a9be22e77f27af98/33569740703.pdf
- http://allasclub.com/campannas/file/7146236686.pdf
- https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5b62c58f2---35894569839.pdf
- https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c34ac0747d9f36954ff9a3788314e62f/nututamewojogoda.pdf
- https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607887c09532b---karuxotukemufit.pdf
- https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16072629f5d3b4---58303267066.pdf
- https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/0e64a83b05bf98ccc93e9fc3a17483e2/jojure.pdf
- https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/098541f9067f3badbc8d3b7af275a530/kinukasinezimemijaru.pdf
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160719a9291e4c---jufiwidazibirowu.pdf
- https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a7043eb704bd3ffec8ff7b404bee07af/59413172108.pdf
- https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/8cba63f2a9c7dec7ea75045878008ad7/83954061058.pdf
- https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/n3n46i5fj8n4ghejcs41counb8/7197192917.pdf
- https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/160861bca0457f---40022517133.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=calculating+simple+probability+worksheets
- 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://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e358.bin92015f5e0080d8181615b0ff3130a0b85bf5591974f2946d7a3f5a3c592ad8ea |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE358 | 5652 bytes |
font_01_sfnt_off0000f66c.binbc19e22dd8cfa01614f0330f8fc09aa20eb096a71750f514e7008100f340c521 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF66C | 10432 bytes |
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