MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains multiple links to external websites, with one heuristic specifically identifying a link to an algorithmically-generated URL on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though partially garbled, suggests a lure related to 'assertive communication' or 'excel training' to entice users to click on the malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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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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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://kuzutuzo.ru/award?keyword=assertive+communication+pdf PDF link annotation
- https://static.s123-cdn-static.com/uploads/4471995/normal_6002d086aba83.pdfIn PDF document text
- http://frontend-developer-azaynullin.site/kufanedidojigwiitn.pdfIn PDF document text
- https://cdn.sqhk.co/mibemofega/ebK7Did/notewapupebanowekinip.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413112/normal_601cb1fc0235f.pdfIn PDF document text
- https://cdn.sqhk.co/wofikubid/MkL4jeT/kuwol.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449603/normal_60344bded0889.pdfIn PDF document text
- https://cdn.sqhk.co/fekawifen/vhcgdjg/87863869391.pdfIn PDF document text
- https://cdn.sqhk.co/tavedikovo/ahhhcEu/air_traffic_controller_training_in_jamaica.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4445532/normal_602717e9585ad.pdfIn PDF document text
- http://skidki-day.store/what_can_you_give_a_teenager_for_anxietyjpppo.pdfIn PDF document text
- http://laulu-go.ru/how_to_become_a_certified_outboard_mechanic6gv3m.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384821/normal_603f7e8368418.pdfIn PDF document text
- http://privateguardingserviceagainstdanger.site/cours_excel_2007_complet_gratuitqzsbw.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://9c43cb74-45e3-47de-9527-fda2e8336169.filesusr.com/ugd/af0aa9_315c5f8af3444910889d5edbae32a8f2.pdf?index=trueIn PDF document text
- https://0df22b04-17ae-4e65-9af8-3af4445b4601.filesusr.com/ugd/71fd01_a7a5f32719df4528a07c54c557a1e224.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/c50d2ce5-ed86-4bb9-9bb3-aec48d0ed803/64844766183.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4383f049-e2da-4455-aa17-c8e0e3137b04/fefunoketoz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e1b7081f-138d-4e51-8bb5-ea9c9379662a/graco_pack_and_play_on_the_go_mattress_size.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/205cd0be-c329-4867-a826-fdd7e1d6dac8/venepatamejona.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f0e4b890-56eb-4321-b120-adf4d958fd2f/mitsubishi_mr_slim_heat_mode.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_off000107c9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107C9 | 5316 bytes |
SHA-256: 21610a8871bbdbf8bf335febcc939c17456b15f8d5d22e687f38c570b4964673 |
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font_01_sfnt_off000119cf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119CF | 10688 bytes |
SHA-256: 276095b04dca9c9df55fcdaa4c48bcec316918bc76aaab939942d955a83fb77b |
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