MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. Static analysis revealed numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting, forming a link farm. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a pattern of using such links, likely to distribute malicious content or phish for credentials.
Machine Learning
- Nyx PDF Classifier malicious score 0.9833
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://synerhu.ru/uplcv?utm_term=get+free+instagram+comments PDF link annotation
- http://rentappli.com/tinymce/jscripts/tiny_mce/plugins/phpimage/phpimage/upload/images/file/kedajofobusalumuma.pdfIn PDF document text
- http://eng.sut.ac.th/tce/2016/administrator/ckfinder/userfiles/files/pawuvivujalerakomekan.pdfIn PDF document text
- https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/f5jqgdg1rsgfifesgmkd2iag6k/linisolewodesalotox.pdfIn PDF document text
- http://ozdermusavirlik.net/userfiles/file/24927901565.pdfIn PDF document text
- https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1613d956033961---dunasimij.pdfIn PDF document text
- http://khamtribacninh.com/images/files/43108615533.pdfIn PDF document text
- http://studioturina.com/userfiles/files/16476916502.pdfIn PDF document text
- http://angarakshaksecurity.com/userfiles/file/70611835358.pdfIn PDF document text
- http://megamento.com/_UploadFile/Images/file/pojego.pdfIn PDF document text
- http://pcwenhua.com/uploadimg/file/16309107601504480337.pdfIn PDF document text
- https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/c03df1e3c72eb282c2e66f0e6421ae1c/35070731745.pdfIn PDF document text
- https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613701ce28218---kojazami.pdfIn PDF document text
- http://adaviestransportltd.com/userfiles/file/21141207531.pdfIn PDF document text
- http://tmtechvn.com/webroot/img/files/vejiwupofiko.pdfIn PDF document text
- http://maraulsan.com/ckfinder/userfiles/files/38310358645.pdfIn PDF document text
- http://jubileejec.com/userfiles/files/jubovusibaxez.pdfIn PDF document text
- https://huanghecables.com/d/files/22098783620.pdfIn PDF document text
- http://cjmfgxfollow.morefriendship.com/upload/files/36390325054.pdfIn PDF document text
- http://stonestudio.pl/files/upload/file/42175671465.pdfIn PDF document text
- https://gad-elhak.com/userfiles/file/nusezisiniloli.pdfIn PDF document text
- http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/16136a9303afbd---28736359263.pdfIn PDF document text
- http://martonelektro.hu/files/file/24065024910.pdfIn PDF document text
- http://school19-zav.ru/userfiles/file/gifaj.pdfIn PDF document text
- http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16133b6bdc8415---jaxonizelujozi.pdfIn PDF document text
- http://evola.it/userfiles/files/95532255634.pdfIn PDF document text
- http://gzhangqin.com/uploadfile/files/28415671193.pdfIn PDF document text
- http://rancholasmonturaspremios.com/campannas/file/20210763998.pdfIn PDF document text
- http://humanlitech.com/files/files/83982279839.pdfIn 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://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_off0000e211.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE211 | 17032 bytes |
SHA-256: 437112b5dd83b4f7f7cea87696dafe538495bfdb57e4c7afcb43497e6d49e6b3 |
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font_01_sfnt_off00010e38.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E38 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001264f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1264F | 10672 bytes |
SHA-256: a268c2f5515113a6e339e2a40858ad163c03c08c700d3c6bd3cc34df876ef105 |
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