MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
The PDF document contains heuristics indicating it is a browser extension/update installation lure, a common social-engineering tactic. It also contains numerous external URIs, many of which point to disposable hosting and are likely part of a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to download and execute a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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=deploying+oracle+database+11gr2+on+redhat+enterprise+linux+7 PDF link annotation
- https://static.s123-cdn-static.com/uploads/4447096/normal_6000da434c575.pdfIn PDF document text
- http://sodahub.pro/2_nephi_9_306kkzj.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4463263/normal_603cb7a0e40a7.pdfIn PDF document text
- http://poradoit1.site/shadow_adventure_hacked1m6xr.pdfIn PDF document text
- http://front-glass.space/bosquejos_biblicos_gratisr1tmx.pdfIn PDF document text
- http://laulu-go.ru/bovovenuwuzunet90bn.pdfIn PDF document text
- http://mklhhhh.space/costanzo_physiologyr1rrz.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4464877/normal_60040d5260cc5.pdfIn PDF document text
- http://palawawez.mypressonline.com/lugagagizevelutej.pdfIn PDF document text
- http://axecheat6.xyz/teach_english_online_jobs_from_homenaz6g.pdfIn PDF document text
- http://prod-fruit.space/evaluna_y_camilo_cancion_nuevad94ou.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481067/normal_602d5af11a8c7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4483354/normal_6044615e7c472.pdfIn PDF document text
- http://kowuterada.mygamesonline.org/22210572739.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/tezude/idea_of_justice_book_price_in_india.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/264ba2ab-1d27-4c26-a667-601b6ed18be1/pbh_iptu_on_line_2020.pdfIn PDF document text
- https://s3.amazonaws.com/midizaxopazeji/limomenerokiwodotematu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3813f3a3-78d2-4978-a11f-b112d6eee774/sosum.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0791b1c0-6857-4262-9297-e84a3b8efead/what_are_the_trending_songs_right_now.pdfIn PDF document text
- https://s3.amazonaws.com/dojonuta/holcim_philippines_annual_report_2017.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/907f15fd-3c0a-4667-926a-23c69f87ec98/what_to_do_when_needle_is_stuck_in_sewing_machine.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000154fb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x154FB | 5908 bytes |
SHA-256: 60b821342a88cd2e8f9ccf519fc5f10d88ac0877d33f0703470c956c974ba452 |
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font_01_sfnt_off0001691e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1691E | 1800 bytes |
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620 |
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font_02_sfnt_off000171ab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x171AB | 12540 bytes |
SHA-256: 01383698442d1e64e14536f72f2bac4a7b6dc3d8d550734e71579223398b52d1 |
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font_03_sfnt_off00019c9a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x19C9A | 16632 bytes |
SHA-256: c50702d4acfbab276db04c5221898060464ebd298806f96ba401251afed68d5e |
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