MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, providing no direct clues to its intent beyond the heuristic findings.
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 https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/c63ebe675987633f7d53362ca17f727d/wolefamuxuzusumiveso.pdf In PDF document text
- http://strandedtattoo.net/file/32225739707.pdfIn PDF document text
- https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/lvk3pikb8q0o6d3u177ahglfnf/wuxanukeguwuxaz.pdfIn PDF document text
- http://bsbcarpet.com/userfiles/file/33589675086.pdfIn PDF document text
- http://csc0851.com/userfiles/file/20210621021028_u4jxgn.pdfIn PDF document text
- http://angarakshaksecurity.com/userfiles/file/51171808138.pdfIn PDF document text
- https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a5beb0ccb72---jagisemulawufudejefuxibo.pdfIn PDF document text
- http://samafb.org/uploadfilefiles/43636028958.pdfIn PDF document text
- http://alphasigmaoverseas.com/userfiles/file/33297288956.pdfIn PDF document text
- https://www.northwoodmedical.ca/wp-content/plugins/super-forms/uploads/php/files/vbk87fiue2ruh9vp6jorah9bcv/71236352930.pdfIn PDF document text
- http://k-souz.com/userfiles/file/2101033809.pdfIn PDF document text
- https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/d3a2bc701106820548c90124e7802b80/32323870707.pdfIn PDF document text
- http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1c0d5303a---58357826477.pdfIn PDF document text
- http://www.nagsa.es/ckfinder/userfiles/files/99275461139.pdfIn PDF document text
- http://dr-onesrl.com/userfiles/files/zuwimutav.pdfIn PDF document text
- https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/13fef8a1dd43bc7c5538c4e4da00fa7b/25843706755.pdfIn PDF document text
- https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/76db2528047119663b090dff899cae9e/65751711229.pdfIn PDF document text
- http://sity-luxe.ru/userfiles/file/majixozarejejusuxax.pdfIn PDF document text
- https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/e915b2dc2d46c5d33833be44ecaef55d/renupuxorav.pdfIn PDF document text
- https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/d5613624e39038a75f41f43584efd496/61545434545.pdfIn PDF document text
- http://rolmech-strzelno.pl/Upload/file/8593303064.pdfIn PDF document text
- http://bakoca.hu/files/file/fisejox.pdfIn PDF document text
- https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a78c0415751---zaterolufijepovosigisok.pdfIn PDF document text
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607f95558df83---fugunezupubitiganef.pdfIn PDF document text
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1724510518---28775598971.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=class+overloading+in+javaPDF 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_off0000dcbf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCBF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f4d6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4D6 | 10552 bytes |
SHA-256: c5d564ac6919f30019378d8fe0bc3dd98324a65dd420bd178b88020041b620b4 |
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font_02_sfnt_off00010cb5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CB5 | 16960 bytes |
SHA-256: 27ec76fa119addceee6352f526ab48fe6b7137ae41df899adc0abd9591ba3b60 |
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