MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The ML classifier and ClamAV detection strongly indicate this PDF is malicious. It contains numerous external URLs, with one heuristic specifically identifying it as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The 'Urgency / deadline lure' heuristic further supports a phishing pretext, although the document body itself is heavily obfuscated and unreadable.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://infrive.ru/uplcv?utm_term=ptet+2016+question+paper+with+answer PDF link annotation
- http://www.gonouvellezelande.com/files/23763495850.pdfIn PDF document text
- https://ikansambel.com/contents/files/moxepewawapa.pdfIn PDF document text
- https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/bl05g9lshfa5nm7e4rdlvqqcgn/94751897519.pdfIn PDF document text
- http://abwessex.com/uploads/files/28169658812.pdfIn PDF document text
- http://arunimaflavours.com/userfiles/file/lagujonuri.pdfIn PDF document text
- http://studiolorenzino.eu/userfiles/files/63513900161.pdfIn PDF document text
- http://delve-cr.com/uploads/95322910525.pdfIn PDF document text
- http://vinacafe-dalat.com/Images_upload/files/kuzukijolexatugux.pdfIn PDF document text
- https://granitabrasive.hu/editor_up/fibokofetimenowatalofat.pdfIn PDF document text
- http://prasongp.com/file_media/file_image/file/1305698331.pdfIn PDF document text
- https://softwebstar.com/shop/userfiles/file/gokigujokizutemuzezud.pdfIn PDF document text
- https://satesayap.com/contents/files/xevemujan.pdfIn PDF document text
- http://szolnokepul.hu/userfiles/file/lurugigekege.pdfIn PDF document text
- http://synowka.pl/galeria/file/2236097509.pdfIn PDF document text
- http://yhbinternational.com/userfiles/file/dusopuji.pdfIn PDF document text
- http://vodova51-53.cz/files/20181907142.pdfIn PDF document text
- https://www.suep.gr/ckfinder/userfiles/files/zabujafiladowikomalilet.pdfIn PDF document text
- https://thai-airpark.com/ckfinder/userfiles/files/31755180492.pdfIn PDF document text
- https://loyallcanada.ca/editor_files/file/kebikeberabunude.pdfIn PDF document text
- https://mintowncoffee.net/uploads/images/files/7599608853.pdfIn PDF document text
- http://hainfelderteich.at/87329200799.pdfIn PDF document text
- http://revize-elektro.info/UserFiles/File/77944488281.pdfIn PDF document text
- http://gro-felix.si/uploads/97092233729.pdfIn PDF document text
- http://abcs.umontreal.ca/upload/files/17812510898.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_off0000e0f9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0F9 | 18152 bytes |
SHA-256: e1676439adfb91b971ae328413944abc9a1e343e2d8a92f86b344e3f2cdbd4fb |
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font_01_sfnt_off00011034.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11034 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001284b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1284B | 11100 bytes |
SHA-256: 727a7324e922a5e14f5daa15ced2830a90fad668e5e081fa0cb0fc376f07923f |
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