MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains malformed streams and is flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It includes numerous URLs, one of which, 'https://zajinet.ru/strik?utm_term=singer+futura+quartet+software+download+for+mac', appears to be a lure for a software download. The document body, though heavily obfuscated, suggests a connection to software and potentially a download. The presence of external URIs and the overall structure indicate an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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://zajinet.ru/strik?utm_term=singer+futura+quartet+software+download+for+mac PDF link annotation
- https://cdn-cms.f-static.net/uploads/4446921/normal_601e0b3471371.pdfIn PDF document text
- http://ruwosiju.getenjoyment.net/wemozokal.pdfIn PDF document text
- http://metoxegid.mygamesonline.org/how_many_times_larger_is_betelgeuse_than_the_sun.pdfIn PDF document text
- https://cdn.sqhk.co/pabopimi/z1jenws/pictures_of_coloring_book_pages.pdfIn PDF document text
- https://cdn.sqhk.co/perigupa/VxPBBxS/silicon_valley_cast_season_6.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4478430/normal_5fe1ac25715a7.pdfIn PDF document text
- https://cdn.sqhk.co/bujerinalo/hajdk4X/33672199809.pdfIn PDF document text
- http://wimudevereru.sportsontheweb.net/all_application_format.pdfIn PDF document text
- http://pugezesiw.mygamesonline.org/how_much_is_it_to_lease_a_2020_honda_civic.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4456122/normal_5fd99c308ee35.pdfIn PDF document text
- http://pevazaw.mypressonline.com/josuliluvugisisoka.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4374852/normal_5feb08a0e487a.pdfIn PDF document text
- http://zenaxudoriw.mypressonline.com/botejuxexexutigusurox.pdfIn PDF document text
- https://cdn.sqhk.co/xugosovemi/p5AihhD/wezajeje.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://lowuguja.myartsonline.com/tuxotowiwogipu.pdfIn PDF document text
- https://a5a8f6e1-24ae-425c-880d-6f4079e3c376.filesusr.com/ugd/035627_472b78d9feb34d89b5a4171f4db8c37a.pdf?index=trueIn PDF document text
- https://1e8c0764-4a0f-46ab-84a2-5f63a8a44928.filesusr.com/ugd/6a0acf_339850c3b5f243549878084e0f513ab1.pdf?index=trueIn PDF document text
- https://921790ca-7b53-43bd-a25d-275d6f056404.filesusr.com/ugd/9d24cb_6b09801f9f384cf3abc036ca4390e75b.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/womirofop/comic_sans_font_ttf.pdfIn PDF document text
- https://s3.amazonaws.com/punagilelabon/barevafesosofosesan.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_off0000e9f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9F0 | 5660 bytes |
SHA-256: 09c382f05a761a2f24fcc94bd4093f45c9d6c291c33173479316ddf10bfaee2f |
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font_01_sfnt_off0000fd29.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD29 | 11372 bytes |
SHA-256: be4f2544b0a4acb0b7ec0473c168f6fd01be7b9935c7f105f8aa566b04d16be9 |
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