MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF document containing embedded JavaScript, which is a common technique for malicious PDFs. The heuristic 'PDF_RANDOM_URL_LINK' indicates a link to an algorithmically generated URL, and the ML classifier strongly flags this PDF as malicious. The embedded JavaScript likely serves to redirect the user to a malicious URL, such as the one identified in the PDF_RANDOM_URL_LINK heuristic, which is a typical phishing or malware distribution vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
Heuristics 7
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://charugarware.com/DEVELOPMENT/charu_garware/uploaded/userfiles/file/rajetupemi.pdf In PDF document text
- https://artofsurfing.com/preview/ckfinder/userfiles/files/lejibunopifoxozaki.pdfIn PDF document text
- http://peknanevesta.sk/media/file/727755042.pdfIn PDF document text
- https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/fg21fu9r3ac1ltc5i7t9ea3217/97131779704.pdfIn PDF document text
- http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161403f7937cb7---tajafigovejitepi.pdfIn PDF document text
- http://sahrugs.com/userfiles/file/tupimibumegadi.pdfIn PDF document text
- https://jahanchart.ir/data/files/file/24258185696.pdfIn PDF document text
- http://showpalmedical.com/userfiles/zakanisuketur.pdfIn PDF document text
- http://bearings-home.com/userfiles/file/mewotodej.pdfIn PDF document text
- https://keiba-like.biz/js/ckfinder/userfiles/files/96063956022.pdfIn PDF document text
- http://lutechmed.com/Images_upload/files/dunuzagisokixatudifev.pdfIn PDF document text
- http://goodfortune.hk/UpLoadFile/file///90632178514.pdfIn PDF document text
- https://codecs.ro/images/file/85946414389.pdfIn PDF document text
- http://driver-jazda.pl/upload/file/43406745587.pdfIn PDF document text
- http://files.ibiza-ferien.de/file/mibuviv.pdfIn PDF document text
- https://loyalangkorapartment.com/userfiles/file/83865925491.pdfIn PDF document text
- http://sun-tes.ru/files/file/gojajirinam.pdfIn PDF document text
- http://carraracucinecomponibilitrapani.it/userfiles/files/timudixipexel.pdfIn PDF document text
- http://hoangduy.vn/vn/files/lanafu.pdfIn PDF document text
- http://jia-longsofa.com/uploadpic/jialong151126/files/202109230110574348.pdfIn PDF document text
- http://studioego.cz/userfiles/file/15963759388.pdfIn PDF document text
- http://ttmm.co.jp/ckfinder/userfiles/files/jeduludofegazur.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=soul+pixar+filmPDF 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_off0000c4e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC4E5 | 10292 bytes |
SHA-256: f8abed5a1f8b124e682e44a3cd6a9c4f30723619ad6c35566df625440b407a03 |
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font_01_sfnt_off0000dc10.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC10 | 17272 bytes |
SHA-256: 5e3ab67df643bb141fe2c3921bc866a4191cdad99862e323ec637719e805948e |
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font_02_sfnt_off000108e9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108E9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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