MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links to external PDFs hosted on disposable domains, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of a link farm on disposable hosting further supports a malicious purpose, likely to obscure the true destination or evade detection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
Heuristics 5
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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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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://wyadonline.com/userfiles/file/javozi.pdf In PDF document text
- http://rimini-portal.de/bilderarchiv/file/jamorelusebuvaxa.pdfIn PDF document text
- http://reanda.com/jingkelun/userfiles/files/20210909000151.pdfIn PDF document text
- http://volkshilfe-vlbg.at/images/content/files/nelokinixofevab.pdfIn PDF document text
- http://chugguwang.com/files/fckeditor/file/dorune.pdfIn PDF document text
- http://bidwoodmachine.com/d/files/96188786821.pdfIn PDF document text
- http://xn--22cjbbm2eyae3ehabdb4kqdtae3dxnnc1fhf.com/user_img/files/tekelevazajijeda.pdfIn PDF document text
- http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16138b6a6349fa---94375072684.pdfIn PDF document text
- http://pinxedien.net/upload/files/92133789700.pdfIn PDF document text
- https://cv-vezouze.fr/media/file/zelozejumiso.pdfIn PDF document text
- http://namjapizza.com/app/webroot/files/tirula.pdfIn PDF document text
- http://avstralianature.ru/ckfinder/userfiles/files/72364352079.pdfIn PDF document text
- http://chataphan.com/file_media/file_image/file/fomubefo.pdfIn PDF document text
- http://saraswatishikshamandir.com/singhania/downloads/file/86367992713.pdfIn PDF document text
- http://0225674989.kad.tw/kads/ckfinder/userfiles/files/zugasiz.pdfIn PDF document text
- https://inprovitvenezuela.com/ckfinder/userfiles/files/97036813965.pdfIn PDF document text
- http://usefchina.com/uploadfile/file///2021091008241736.pdfIn PDF document text
- http://abwplazaview.com/uploads/files/sivegobuxulobirafi.pdfIn PDF document text
- https://limblength-sldf.com/userfiles/file/samiledudabuwifedupema.pdfIn PDF document text
- http://osteriadelcampanile.com/userfiles/files/17233091316.pdfIn PDF document text
- http://gartenbaukoeln.de/uploads/files/detujiguzepavuxafufarazi.pdfIn PDF document text
- https://pima-alarms.net/slicice/file/furugowereraluxawubofabam.pdfIn PDF document text
- https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/8035ccb5e3426c7d468a41660465c595/rikakilugediwasatiwo.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=joker+malware+analysisPDF 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_off0000d448.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD448 | 18892 bytes |
SHA-256: f0f5c85856eb8881153fab9c2b96303da44c123f65c9c4c0d968b35940a8336f |
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font_01_sfnt_off00010559.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10559 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011d70.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D70 | 10452 bytes |
SHA-256: 6cf03b7c6784725476dc40722b27d57cc0e13a292552d4b352b1c9fa55ce6c5f |
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