MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of a 'download' button heuristic further supports the lure of downloading a payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://leonvi.ru/award?keyword=biology+past+questions+pdf+download PDF link annotation
- http://biweekamnf.com/60139198605f0tzr.pdfIn PDF document text
- http://tupaxeguna.scienceontheweb.net/89407145844.pdfIn PDF document text
- https://sibibogug.weebly.com/uploads/1/3/5/9/135990875/5476957.pdfIn PDF document text
- http://good-production20.site/petrolia_isd_tx22oqp.pdfIn PDF document text
- http://secureappeal.com/puzevigomenujobevaze6na5.pdfIn PDF document text
- http://karnaval.host/wakogisabilibipavowoxjw10l.pdfIn PDF document text
- http://dasiwujupuna.sportsontheweb.net/active_and_passive_voice_quiz_test.pdfIn PDF document text
- http://rivepozepuxar.mywebcommunity.org/precalculus_with_limits_3e_chapter_7.pdfIn PDF document text
- http://vixemifojetinag.sportsontheweb.net/jejolovagujasag.pdfIn PDF document text
- https://suxugugufagiwa.weebly.com/uploads/1/3/4/7/134740592/nisadi.pdfIn PDF document text
- http://kotudekudoges.getenjoyment.net/nsk_deep_groove_ball_bearing_catalogue.pdfIn PDF document text
- http://springital.fun/susuzigareki0mbtu.pdfIn PDF document text
- http://store50off.info/linen_sheet_set_kmart1c4bj.pdfIn PDF document text
- https://jebasiju.weebly.com/uploads/1/3/1/3/131381450/regutilutow.pdfIn PDF document text
- http://kedugobepuged.mywebcommunity.org/white_fang_of_the_leaf_kakashi.pdfIn PDF document text
- https://famexowizesiz.weebly.com/uploads/1/3/4/3/134359716/0ad60ab3d5bdcb.pdfIn PDF document text
- http://lixidepobejoji.mypressonline.com/pawipowokavofufofakol.pdfIn PDF document text
- http://graatorama.space/what_is_the_hebrew_word_for_sons_of_god8q048.pdfIn PDF document text
- https://milonotupilo.weebly.com/uploads/1/3/5/3/135347339/desasewosabafivokoso.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/735feab6-8fc3-41bd-ac47-db62f00100d0/lord_of_the_flies_study_notes.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d25f3cd9-44ff-47c9-a38b-653a6e77ca0c/letobabif.pdfIn PDF document text
- http://lurarapekakaka.atwebpages.com/electronic_library_system.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c583d2ec-6b8d-446a-986f-0fedb971926a/27547405779.pdfIn PDF document text
- http://wowutuzineko.myartsonline.com/kusuzelozane.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6b3588a5-f35f-41e3-9a90-1eb4481830a8/meliderenijoz.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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fa71.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA71 | 5484 bytes |
SHA-256: c8f226d35a4a88e70a4e24e2d479a3c3b008f9d9a9e3b632f74caf5e41798d18 |
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font_01_sfnt_off00010d4e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D4E | 11212 bytes |
SHA-256: 34f2a5af822ea4817c345afeb71e083d472e7f51cbbb10cb36513a64e2ee6ef8 |
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