MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of external links, many pointing to disposable hosting services, indicating a link farm designed to distribute malicious content or phish users. The primary URL, https://jacksth.ru/strik?utm_term=oreck+proshield+air+purifier+manual, suggests a lure related to product manuals. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 6
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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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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://jacksth.ru/strik?utm_term=oreck+proshield+air+purifier+manual
- https://visorupa.weebly.com/uploads/1/3/5/3/135305290/fdd6ca28a7b.pdf
- https://regezubigif.weebly.com/uploads/1/3/5/3/135320660/gubesizilit_kokebawivobu.pdf
- https://mazanotofubemiz.weebly.com/uploads/1/3/2/6/132681192/7482364.pdf
- https://keregejuvuja.weebly.com/uploads/1/3/4/3/134345288/3cb425.pdf
- https://kuribigewisowe.weebly.com/uploads/1/3/4/6/134688213/1af3e9f.pdf
- http://pipvip.ru/zoom_h4n_recorder_specs53cvx.pdf
- http://arfeshome.com/how_many_electrons_are_in_the_4d_orbitals_of_technetiumzjvch.pdf
- https://suviliter.weebly.com/uploads/1/3/1/4/131453542/tasudid.pdf
- https://ligibumifi.weebly.com/uploads/1/3/4/6/134647936/51948cb4.pdf
- https://vozozexofevufut.weebly.com/uploads/1/3/1/8/131871902/0e297f879951.pdf
- http://tibetterrier.ru/combos_de_saint_seiya_hades_ps2_cheatshlwuq.pdf
- http://banki-internetowe.com/plan_y_programa_2011_cuarto_grado_geografia7j1ga.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://ff0b3df2-dc61-4aeb-9024-93fa9b5bc175.filesusr.com/ugd/aa14a9_c1890286f0e64dfc86388fc807f0e358.pdf?index=true
- https://s3.amazonaws.com/degagaziv/35839836336.pdf
- https://5fa60de5-32ab-41ac-ba65-77330e21e623.filesusr.com/ugd/2e16aa_12ac7815a57f403883dd0354c802b803.pdf?index=true
- https://s3.amazonaws.com/farowug/37168996920.pdf
- https://917ed8d3-8a9f-4c5c-a3ad-554e533308ad.filesusr.com/ugd/a4e402_8ac75a77504644d5868dd83f45182194.pdf?index=true
- https://b81f28a7-a6cc-4df9-aebb-a76b708ee4b5.filesusr.com/ugd/df05b2_abdf7d6dcc224a07a2e156760e5a0ecf.pdf?index=true
- https://6b54b0b2-91db-43cc-88c8-bbc4f7e20b37.filesusr.com/ugd/a773aa_772471ce4f3342b9b160b42ae8191738.pdf?index=true
- https://d1897088-ef6e-4b60-8303-910b4b551fc1.filesusr.com/ugd/4cfbbd_a39b3aa53c30450ba515d03010136822.pdf?index=true
- https://d128792e-e0a8-46e0-98ed-b941f5da69b2.filesusr.com/ugd/b98abb_f9dcc23cb6d64752a41e382507e38717.pdf?index=true
- https://s3.amazonaws.com/kukazowox/50912464035.pdf
- https://s3.amazonaws.com/vebisop/xafigerub.pdf
- https://b00f38ea-0d13-4519-ab0f-1253f0d03ca0.filesusr.com/ugd/289c5e_739229e5799c42edacdf5a0bffa03ef5.pdf?index=true
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f235.bin8ce541ca17cb5b8ea7f90d365c0c137f5d19eee6338b82229cf5edef03e83274 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF235 | 5288 bytes |
font_01_sfnt_off000103fe.bin5a10ac95c4aec0990137b5a3b391b7b2432af97da88a11ff8faa5257a5599c96 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103FE | 10856 bytes |
font_02_sfnt_off00012931.binff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12931 | 4324 bytes |
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