MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a link farm pointing to multiple compromised WordPress sites, likely serving as a distribution point for further malicious content. The document body, though heavily obfuscated, suggests a lure related to "multithreading java questions" to entice users to click the embedded links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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://oniceh.ru/uplcv?utm_term=multithreading+java+questions PDF link annotation
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1607a895f84f69---56238730751.pdfIn PDF document text
- https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/6a38141cec1c319fa1106dbe499f37f5/nejukojawuzavamez.pdfIn PDF document text
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16098bb410f00a---kajapiga.pdfIn PDF document text
- http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609d0c4cac463---bezedijiwurinujebisex.pdfIn PDF document text
- https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/dfa05e7554d4ad3914524ebd6b0d4522/kuparelofiguvaja.pdfIn PDF document text
- http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d56142a24b---nabilujud.pdfIn PDF document text
- http://alhouti.com/userfiles/file/59701845072.pdfIn PDF document text
- http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16084bdaf1d3ba---59232070245.pdfIn PDF document text
- http://pnmanagementsolutions.in/uploads/tewikovavenerajegonapo.pdfIn PDF document text
- https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/fe6dfca305a9e22db5b3acccbabd9709/fakamewopobosixadef.pdfIn PDF document text
- https://anfauglir.com/images/file/jatamisinuvutaleluji.pdfIn PDF document text
- https://securitegenerale.tn/userfiles/file/85984110492.pdfIn PDF document text
- http://okmarin.ru/userfiles/file/xufidapopa.pdfIn PDF document text
- https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/105a4f55e761dd5e76b227b66569485b/bimisiranapufaterosamupa.pdfIn PDF document text
- https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e64b37ea7c---xazubatejefavaz.pdfIn PDF document text
- https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/4r1ckb9n8oreitc8i7v9o50ps2/67507678282.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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e3af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3AF | 5356 bytes |
SHA-256: 23bcc3fd77e2a6f04bb984dd54061b908d985bc08c7b1583688bcc385a9fd73d |
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font_01_sfnt_off0000f5e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5E8 | 11352 bytes |
SHA-256: 85c65927c20a2d3f8636edeb78eec5dcecec93f3957dd498049f9800149a2039 |
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