MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to various compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of external URIs and link farms indicates a likely phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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 http://nhasachnguyenvancu.com/Images_upload/files/36007156967.pdf In PDF document text
- http://kystar.net/filespath/files/20210907072513.pdfIn PDF document text
- https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/41bb4a4e0853429dd21a85ece2b51b8f/13546142613.pdfIn PDF document text
- https://podiummagazinenews.com/ckfinder/userfiles/files/fawuposotogefazadiboxo.pdfIn PDF document text
- http://blessingsngo.in/userfiles/files/53145065127.pdfIn PDF document text
- http://sxnqx.org/upload/file/Fl202109030508113751.pdfIn PDF document text
- http://okuninka-biale.pl/userfiles/file/fajakuvubateguni.pdfIn PDF document text
- http://showdoimovel.com/files/files/46418375041.pdfIn PDF document text
- http://teresachild.com/upload/files/28366457485.pdfIn PDF document text
- http://kosmonautika.ee/ckfinder/userfiles/files/werutefadajuwi.pdfIn PDF document text
- http://aurora-c.jp/files/files/63778985845.pdfIn PDF document text
- http://maxidmum.com/images/upload/fck/file/tumuwatepunivuku.pdfIn PDF document text
- http://hardiebase.com/uploads/assets/filefile/wowob.pdfIn PDF document text
- http://angel-conference.org/upload_fck/file/2021-9-12/20210912015345146997.pdfIn PDF document text
- https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e47b0edb7c---buzidarupimuwetopoze.pdfIn PDF document text
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613e6af5a31dd---21345839421.pdfIn PDF document text
- https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/1qn2r9do8hm605a40412t2c0oq/70544915860.pdfIn PDF document text
- http://chunmianxian.com/upfolder/e/files/20210909140915.pdfIn PDF document text
- http://supair-lux.hu/ckfinder/userfiles/files/ruzitojifawapona.pdfIn PDF document text
- https://natyabio.com/uploadfiles/1574896161.pdfIn PDF document text
- http://ei-windykacja.pl/upload/file/zitegiz.pdfIn PDF document text
- https://hotararicedo.ro/files/files/39854265720.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=poco+x3+keeps+restartingPDF 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_off0000c8d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC8D1 | 10868 bytes |
SHA-256: 291642a46cb400b8c2e18b1bef0dccbeb5e628293d2391b9cd36febfc1f04b80 |
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font_01_sfnt_off0000e230.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE230 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000fa42.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA42 | 17840 bytes |
SHA-256: 4b9edce5ca49011e87b37ff70b173ed52caca53a206f80cc580f5068a841ce80 |
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