MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded links, many pointing to potentially untrusted domains, suggesting it functions as a link farm or a lure to external malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a strategy to distribute links across disposable hosting. No scripts were extracted, but the overall structure and heuristic firings point towards a phishing or malware distribution vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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 https://mcq-exambd.com/app/webroot/ckfinder/userfiles/files/kefalepawe.pdf In PDF document text
- https://oriental-kitchens.com/userfiles/files/91581493622.pdfIn PDF document text
- http://ballarioarchitetti.eu/userfiles/files/komifatonutuwudej.pdfIn PDF document text
- https://aayams.com/userfiles/file/60099178371.pdfIn PDF document text
- http://xn--o39a91gvwm83kbsn.com/FileData/ckfinder/files/20210903_EB08E58960701A91.pdfIn PDF document text
- http://www.espaciocultivarte.com/ckfinder/userfiles/files/24670277243.pdfIn PDF document text
- http://orvositudasbazis.eu/images/upload/file/maresizexedetotuv.pdfIn PDF document text
- http://lokalsport.no/userfiles/file/3806807754.pdfIn PDF document text
- http://pcwenhua.com/uploadimg/file/1631080384186611808.pdfIn PDF document text
- http://tahi.hu/ckfinder/userfiles/files/kalisowof.pdfIn PDF document text
- http://aadcnfgl.netsociality.com/upload/files/55365518307.pdfIn PDF document text
- http://wirtrauenuns.ch/images/file/70562301061.pdfIn PDF document text
- https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/jalq59nhplb3fr2r4r5vb94n8u/96824277543.pdfIn PDF document text
- https://daynexweb.com/upload/ckfinder/files/68303710585.pdfIn PDF document text
- https://bokaichenyu.com/upload/files/tositovipovaneluzogotu.pdfIn PDF document text
- http://refpecsbelvaros.hu/kepek/files/19690891849.pdfIn PDF document text
- http://marcelponjee.nl/ponjeefiles/file/5691893229.pdfIn PDF document text
- https://psg66.ru/admin/ckfinder/userfiles/files/44037716121.pdfIn PDF document text
- http://azstorestudio.com/uploads/files/27175330940.pdfIn PDF document text
- http://cerescommoditiesltd.com/Images_upload/files/lejutajo.pdfIn PDF document text
- https://robustbrakes.com/administrator/imagetemp/file/27872541503.pdfIn PDF document text
- http://dulichtantai.com/files/uploaded/files/17525220138.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=android+sdk+tools+archivePDF 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_off0000d5a4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5A4 | 17376 bytes |
SHA-256: 0e9e0cca29bd2335f966b55f59b6a1925cbd6d8d5155133bdc4b1c9c9f326b97 |
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font_01_sfnt_off000102c3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102C3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011ada.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11ADA | 10604 bytes |
SHA-256: 2ced0bc15a33b1b9aedc5ed27315cab7f51be30ef24bb18ea8b5cc9ab1becd0d |
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